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Germany’s top court ruled just last year against the removal of a medieval, antisemitic sculpture in the very church where Martin Luther had preached. Despite debates, some swastikas from the Third Reich have been left on church bells.

This propensity for what Ms. Schneidewind calls “historical hoarding” means that many Soviet memorials in East Germany contain Stalin’s name nearly 70 years after the dictator was largely purged from public spaces in Russia itself.

Officials say their duty to care for such memorials dates to the so-called Good Neighbor agreement between Germany and the Soviet Union in 1990. Under that measure, each nation committed itself to the upkeep of the other’s war graves on its territory.

Most of the Red Army monuments in Germany are believed to have been built above the graves of Soviet soldiers or prisoners of war. The Russian Embassy has used the pact to draw the German government’s attention to Soviet monuments, including the one in Lützen, that have been damaged or neglected.

“Instead of tearing them down, you should redefine these memorials,” Mr. Nagel said. “You need to explain why they are here, and why you have a different view of them now.”

In Lützen, local residents say they want to keep their Red Army memorial as it is, a tribute to the central place occupied by the pyramid in the town’s public life during Communist rule. Some remember playing around it while attending the nearby kindergarten, and they say they will fight plans to move it to accommodate a proposed new supermarket.

“This is our history, no matter what is going on in world politics,” said the town’s mayor, Uwe Weiss. “We have to take care of it, because it is part of us.”

Deterrence is an uneasy goal, however — hard to measure, impossible to predict, and at danger of becoming retribution in the wrong hands, or even hardening reactionary and illiberal elements by accident.

Reaching one shared idea of what happened and why things went wrong, even within a smaller group behind closed doors, has real appeal, even if it’s not how we would want a country run. Instead, it’s like the best society can do is to keep applying a kind of societal weight to Mr. Trump — attention on the accurate memory of the events, the creation of legal hurdles and public scrutiny, possibly doomed prosecutions of varying quality — adding a little more weight, a little more weight, a little more weight in an effort to contain him

It’s like some mixed-up version of deterrence and truth, with a society trying something, anything, with possibly volatile precedents for the future.

An early critic of groupthink, Carter warned against “the idea that Black people who gain positions of authority or influence are vested a special responsibility to articulate the presumed views of other people who are Black — in effect, to think and act and speak in a particular way, the Black way — and that there is something peculiar about Black people who insist on doing anything else.”

In the past, such ideas might have been seen as “frankly racist,” Carter noted. “Now, however, they are almost a gospel for people who want to show their commitment to equality.” This belies the reality that Black people, he said, “fairly sparkle with diversity of outlook.”

He disparaged what he called “the peculiar relationship between Black intellectuals and the white ones who seem loath to criticize us for fear of being branded racists — which is itself a mark of racism of a sort.”

At the same time, Carter bristled at the judgment of many of his Black peers, describing several situations in which he found himself accused of being “inauthentically” Black, as if people of a particular race were a monolith and that those who deviated from it were somehow shirking their duty. He said he didn’t want to be limited in what he was allowed to say by “an old and vicious form of silencing.”

“No weight is added to a position because somebody is Black. One has to evaluate an argument on its own merits, not on the race of the person making it.”

Carter took issue with the belief, now practically gospel in academic, cultural and media circles, that heightened race consciousness would be central to overcoming racism. However well intentioned you may be, when you reduce people to their race-based identity rather than view them as individuals in their full, complex humanity, you risk making sweeping assumptions about who they are.

“There has always been something unsettling about the advocacy of a continuation of racial consciousness in the name of eradicating it.”

In a cover review in The New York Times Book Review, David J. Garrow, a Pulitzer Prize-winning historian of the civil rights movement, called “Reflections of an Affirmative Action Baby” “powerfully written and persuasive.” The Los Angeles Times said it was “an essential text in the public debate over racial preferences.” The New Yorker called Carter “shrewd, subtle and funny.”

defenders of affirmative action too often dismiss those beneficiaries of affirmative action who publicly express reservations about the policy. These defenders often make knee-jerk assumptions about the political agendas of liberal Black writers like Thomas Chatterton Williams and my colleague at The Times John McWhorter, falsely casting them as conservatives or traitors to their race.

he rejected all efforts to label him, insisting that intellectuals should be “politically unpredictable.” As Washington Monthly noted: “Critics who attempt to push (or pull) Carter into the ranks of the Black right wing will be making a mistake. He is not a conservative, neo- or otherwise. He is an honest Black scholar — the product of the pre-politically correct era — who abhors the stifling of debate by either wing or by people of any hue.”

“Reflections” offers a vigorous and unflinching examination of ideas, something academia, media and the arts still prized in 1991. Carter’s arguments were considered worthy of discussion, however misguided his critics took them to be

Today, a kind of magical thinking has seized ideologues on both the left and the right, who seem to believe that stifling debate on difficult questions will make them go away. But if affirmative action itself goes away, America — which Carter deemed “a society that prefers its racial justice cheap” — will no longer be able to avoid grappling with the real and persistent inequalities that necessitated it in the first place.

Altman and Geoff Hinton, a so-called godfather of AI who quit Google to warn of the potential dangers of AI, were among more than a dozen American and British AI executives and senior researchers from companies including chip maker Nvidia and generative AI leaders Midjourney and Anthropic who spoke at the conference. 

“This event is extremely rare in U.S.-China AI conversations,” said Jenny Xiao, a partner at venture-capital firm Leonis Capital and who researches AI and China. “It’s important to bring together leading voices in the U.S. and China to avoid issues such as AI arms racing, competition between labs and to help establish international standards,” she added.

By some metrics, China now produces more high-quality research papers in the field than the U.S. but still lags behind in “paradigm-shifting breakthroughs,” according to an analysis from The Brookings Institution. In generative AI, the latest wave of top-tier AI systems, China remains one to two years behind U.S. development and reliant on U.S. innovations, China tech watchers and industry leaders have said. 

The competition between Washington and Beijing belies deep cross-border connections among researchers: The U.S. and China remain each other’s number one collaborators in AI research,

During a congressional testimony in May, Altman warned that a peril of AI regulation is that “you slow down American industry in such a way that China or somebody else makes faster progress.”

At the same time, he added that it was important to continue engaging in global conversations. “This technology will impact Americans and all of us wherever it’s developed,”

Altman delivered the opening keynote for a session dedicated to AI safety and alignment, a hotly contested area of research that aims to mitigate the harmful impacts of AI on society. Hinton delivered the closing talk for the same session later Saturday, also dialing in. He presented his research that had made him more concerned about the risks of AI and appealed to young Chinese researchers in the audience to help work on solving these problems.

“Over time you should expect us to open-source more models in the future,” Altman said but added that it would be important to strike a balance to avoid abuses of the technology.

He has emphasized cautious regulation as European regulators consider the AI Act, viewed as one of the most ambitious plans globally to create guardrails that would address the technology’s impact on human rights, health and safety, and on tech giants’ monopolistic behavior.

Chinese regulators have also pressed forward on enacting strict rules for AI development that share significant overlap with the EU act but impose additional censorship measures that ban generating false or politically sensitive speech.

Tegmark, who attended in person, strode onto the stage smiling and waved at the crowd before opening with a few lines of Mandarin.

“For the first time now we have a situation where both East and West have the same incentive to continue building AI to get to all the benefits but not go so fast that we lose control,” Tegmark said, after warning the audience about catastrophic risks that could arise from careless AI development. “This is something we can all work together on.”

Some people are trying to figure out the impact from the bottom up, looking at various kinds of work and guesstimating how much of that work can be replaced or augmented by A.I. The most widely circulated numbers come from Goldman Sachs, whose base case has A.I. increasing the growth rate of productivity — output per person-hour — by almost 1.5 percentage points a year over a decade, for a total over that decade of about 15 percent:

By the time the productivity surge tapered off, productivity was about 12 percent higher than the previous trend would have led you to expect it would be. Since A.I. is arguably an even more profound innovation than the technologies that drove the 1995-2005 boom, 15 percent isn’t at all unreasonable.

economists often identify total factor productivity growth with technological progress. That’s sometimes a bit dubious, since T.F.P. is really a “measure of our ignorance,” simply the part of economic growth we can’t explain otherwise. But from 1995 to 2005 it seems fairly clear that the boom was driven by information technology.

Here’s another view of that boom, in which I show the natural log of productivity — so that a straight line corresponds to steady growth — and plot a continuation of the growth rate from 1973 to 1995 (the red line), so that you can see how actual growth compared:

Is this plausible? Actually, yes. One parallel, if you’ve studied the historical relationship between technology and productivity, is the productivity boom from 1995 to 2005, which followed decades of weak productivity growth.

But will higher productivity make us richer or simply reduce the number of jobs? Fears of technological unemployment — a term invented by none other than John Maynard Keynes in 1930 — go back at least to the early 19th century.

While technology has often eliminated some jobs, however, historically this has always been, as Keynes wrote, “a temporary phase of maladjustment,” with other forms of employment rising to replace the jobs lost

while there’s no reason to believe that what we’re calling A.I. will lead to mass unemployment, it may well hurt the people who are displaced from their jobs and either have trouble finding new employment or are obliged to accept lower wages. Who are the potential losers?

The likely answer is that big impacts will fall on relatively high-end administrative jobs, many of them currently highly paid, while blue-collar jobs will be largely unscathed

there are other applications of big data that may affect blue-collar work. For example, with all the buzz around ChatGPT there has been relatively little attention paid to the fact that after years of failed hype, self-driving cars are actually beginning to go into service.

Still, at this point it seems more likely than not that A.I. will, unlike technological progress over the past 40 years, be a force for lower rather than higher income inequality.

rapidly rising interest rates have made debt considerably more worrisome. Conventional estimates of the economy’s long-run sustainable growth rate, like those of the Federal Reserve, tend to put it around 1.8 percent. And real interest rates on federal debt are now above that number:

if optimistic estimates of the boost from the technology are at all right, growth will be much higher than 1.8 percent over the next decade, and debt won’t be a big concern after all — especially because faster growth will boost revenue and reduce the budget deficit.

All of this is, of course, highly speculative. Nobody really knows how big an impact A.I. will have. But again, it doesn’t have to be “true” artificial intelligence to be a big deal for the economy, and the best guess is that it will probably matter a lot.

Beady-eyed readers will note that most of this stuff, apart from Terra-Luna, is in the “on top of” category and not actually on-chain tech. DeFi exchanges and lending protocols have continued to whir even as the enterprises more akin to normal businesses have imploded one by one. But the collapse of these enterprises could imperil the underlying tech by taking out chunks of its value, making the chains more exposed to would-be attackers and pushing miners or stakers to switch off their machines

The value of on-chain activity and tokens is self-reinforcing. The more people that use DeFi, the more valuable Ethereum becomes. The higher the price of ether, the higher the hurdle to attack the blockchain and the more confidence people will have that blockchains will endure

This also works in reverse. The more people shy away from crypto out of fear, the less secure it becomes.

The total market cap of cryptocurrencies is currently $820bn. That is 70% below the peak a year ago, but still high compared with most of crypto’s history.

Many more layers—such as a major stablecoin, big businesses or perhaps other on-chain protocols—would have to unravel to take crypto’s value back to the levels at which it traded just three or four years ago

Although fewer people will use crypto as a result of the ftx collapse, it is very hard to imagine the number will be small enough to take its value to zero. ■

To take out crypto entirely would require killing the underlying blockchain layers. They could either give way first, kicking the stool out from underneath everything else. Or the industry could unravel from the top down, layer by layer like a knitted scarf.

how the industry works. At crypto’s base are blockchains, like Bitcoin and Ethereum, which record transactions verified by computers, a process incentivised by the issuance of new tokens. The Ethereum blockchain validates lines of code, which has made it possible for people to issue their own tokens or build applications

Major chains and a handful of Ethereum-based tokens, like stablecoins, account for about 90% of cryptocurrency value. Big businesses have been built on top of this world, including exchanges, investment funds and lending platforms.

The death of ftx, an exchange declared bankrupt on November 11th after a spectacular blow-up, will encourage some people to turn their attention elsewhere. What would have to happen for everyone to give up?

With respect to crime, poverty and homelessness, Brown argued,One thing that may occur is that disinvestment in city downtowns will alter the spatial distribution of these elements in cities — i.e. in which neighborhoods or areas of a city is crime more likely, and homelessness more visible. Urban downtowns are often policed such that these visible elements of poverty are pushed to other parts of the city where they will not interfere with commercial activities. But absent these activities, there may be less political pressure to maintain these areas. This is not to say that the overall crime rate or homelessness levels will necessarily increase, but their spatial redistribution may further alter the trajectory of commercial downtowns — and the perception of city crime in the broader public.

“The more dramatic effects on urban geography,” Brown continued,may be how this changes cities in terms of economic and racial segregation. One urban trend from the last couple of decades is young white middle- and upper-class people living in cities at higher rates than previous generations. But if these groups become less likely to live in cities, leaving a poorer, more disproportionately minority population, this will make metropolitan regions more polarized by race/class.

the damage that even the perception of rising crime can inflict on Democrats in a Nov. 27 article, “Meet the Voters Who Fueled New York’s Seismic Tilt Toward the G.O.P.”: “From Long Island to the Lower Hudson Valley, Republicans running predominantly on crime swept five of six suburban congressional seats, including three that President Biden won handily that encompass some of the nation’s most affluent, well-educated commuter towns.

In big cities like New York and San Francisco we estimate large drops in retail spending because office workers are now coming into city centers typically 2.5 rather than 5 days a week. This is reducing business activity by billions of dollars — less lunches, drinks, dinners and shopping by office workers. This will reduce city hall tax revenues.

Public transit systems are facing massive permanent shortfalls as the surge in working from home cuts their revenues but has little impact on costs (as subway systems are mostly a fixed cost. This is leading to a permanent 30 percent drop in transit revenues on the New York Subway, San Francisco Bart, etc.

These difficulties for cities will not go away anytime soon. Bloom provided data showing strong economic incentives for both corporations and their employees to continue the work-from-home revolution if their jobs allow it:

First, “Saved commute time working from home averages about 70 minutes a day, of which about 40 percent (30 minutes) goes into extra work.” Second, “Research finds hybrid working from home increases average productivity around 5 percent and this is growing.” And third, “Employees also really value hybrid working from home, at about the same as an 8 percent pay increase on average.

three other experts in real estate economics, Arpit Gupta, of N.Y.U.’s Stern School of Business, Vrinda Mittal, both of the Columbia Business School, and Van Nieuwerburgh. They anticipate disaster in their September 2022 paper, “Work From Home and the Office Real Estate Apocalypse.”

“Our research,” Gupta wrote by email,emphasizes the possibility of an ‘urban doom loop’ by which decline of work in the center business district results in less foot traffic and consumption, which adversely affects the urban core in a variety of ways (less eyes on the street, so more crime; less consumption; less commuting) thereby lowering municipal revenues, and also making it more challenging to provide public goods and services absent tax increases. These challenges will predominantly hit blue cities in the coming years.

the three authors “revalue the stock of New York City commercial office buildings taking into account pandemic-induced cash flow and discount rate effects. We find a 45 percent decline in office values in 2020 and 39 percent in the longer run, the latter representing a $453 billion value destruction.”

Extrapolating to all properties in the United States, Gupta, Mittal and Van Nieuwerburgh write, the “total decline in commercial office valuation might be around $518.71 billion in the short-run and $453.64 billion in the long-run.”

the share of real estate taxes in N.Y.C.’s budget was 53 percent in 2020, 24 percent of which comes from office and retail property taxes. Given budget balance requirements, the fiscal hole left by declining central business district office and retail tax revenues would need to be plugged by raising tax rates or cutting government spending.

Since March 2020, Manhattan has lost 200,000 households, the most of any county in the U.S. Brooklyn (-88,000) and Queens (-51,000) also appear in the bottom 10. The cities of Chicago (-75,000), San Francisco (-67,000), Los Angeles (-64,000 for the city and -136,000 for the county), Washington DC (-33,000), Seattle (-31,500), Houston (-31,000), and Boston (-25,000) make up the rest of the bottom 10.

Prior to the pandemic, these ecosystems were designed to function based on huge surges in their daytime population from commuters and tourists. The shock of the sudden loss of a big chunk of this population caused a big disruption in the ecosystem.

Just as the pandemic has caused a surge in telework, Loh wrote, “it also caused a huge surge in unsheltered homelessness because of existing flaws in America’s housing system, the end of federally-funded relief measures, a mental health care crisis, and the failure of policies of isolation and confinement to solve the pre-existing homelessness crisis.”

The upshot, Loh continued,is that both the visibility and ratio of people in crisis relative to those engaged in commerce (whether working or shopping) has changed in a lot of U.S. downtowns, which has a big impact on how being downtown ‘feels’ and thus perceptions of downtown.

The nation, Glaeser continued, isat an unusual confluence of trends which poses dangers for cities similar to those experienced in the 1970s. Event#1 is the rise of Zoom, which makes relocation easier even if it doesn’t mean that face-to-face is going away. Event#2 is a hunger to deal with past injustices, including police brutality, mass incarceration, high housing costs and limited upward mobility for the children of the poor.

Progressive mayors, according to Glaeser,have a natural hunger to deal with these problems at the local level, but if they try to right injustices by imposing costs on businesses and the rich, then those taxpayers will just leave. I certainly remember New York and Detroit in the 1960s and 1970s, where the dreams of progressive mayors like John Lindsay and Jerome Patrick Cavanagh ran into fiscal realities.

Richard Florida, a professor of economic analysis and policy at the University of Toronto, stands out as one of the most resolutely optimistic urban scholars. In his August 2022 Bloomberg column, “Why Downtown Won’t Die,”

His answer:

Great downtowns are not reducible to offices. Even if the office were to go the way of the horse-drawn carriage, the neighborhoods we refer to today as downtowns would endure. Downtowns and the cities they anchor are the most adaptive and resilient of human creations; they have survived far worse. Continual works in progress, they have been rebuilt and remade in the aftermaths of all manner of crises and catastrophes — epidemics and plagues; great fires, floods and natural disasters; wars and terrorist attacks. They’ve also adapted to great economic transformations like deindustrialization a half century ago.

Florida wrote that many urban central business districts are “relics of the past, the last gasp of the industrial age organization of knowledge work the veritable packing and stacking of knowledge workers in giant office towers, made obsolete and unnecessary by new technologies.”

“Downtowns are evolving away from centers for work to actual neighborhoods. Jane Jacobs titled her seminal 1957 essay, which led in fact to ‘The Death and Life of Great American Cities,’ ‘Downtown Is for People’ — sounds about right to me.”

Despite his optimism, Florida acknowledged in his email thatAmerican cities are uniquely vulnerable to social disorder — a consequence of our policies toward guns and lack of a social safety net. Compounding this is our longstanding educational dilemma, where urban schools generally lack the quality of suburban schools. American cities are simply much less family-friendly than cities in most other parts of the advanced world. So when people have kids they are more or less forced to move out of America’s cities.

What worries me in all of this, in addition to the impact on cities, is the impact on the American economy — on innovation. and competitiveness. Our great cities are home to the great clusters of talent and innovation that power our economy. Remote work has many advantages and even leads to improvements in some kinds of knowledge work productivity. But America’s huge lead in innovation, finances, entertainment and culture industries comes largely from its great cities. Innovation and advance in. these industries come from the clustering of talent, ideas and knowledge. If that gives out, I worry about our longer-run economic future and living standards.

The risk that comes with fiscal distress is clear: If city governments face budget shortfalls and begin to cut back on funding for public transit, policing, and street outreach, for the maintenance of parks, playgrounds, community centers, and schools, and for services for homelessness, addiction, and mental illness, then conditions in central cities will begin to deteriorate.

There is reason for both apprehension and hope. Cities across time have proven remarkably resilient and have survived infectious diseases from bubonic plague to cholera to smallpox to polio. The world population, which stands today at eight billion people, is 57 percent urban, and because of the productivity, innovation and inventiveness that stems from the creativity of human beings in groups, the urbanization process is quite likely to continue into the foreseeable future. There appears to be no alternative, so we will have to make it work.

Some called the world system of the 2000s and early 2010s “Chimerica”. During these years, the hope that global trade would lead to a cessation of great-power conflict, even without ideological alignment, seemed justified. And although China’s politics didn’t liberalize, under Jiang and Hu the country became more open to foreign travelers, foreign workers, and foreign ideas. This might not have been the End of History, but it was a compromise most people could live with for a while.

In the mid-2010s, this compromise began to break down. On the U.S. side, there was increasing anger over the long-term decline of good manufacturing jobs, and an increasing feeling of the U.S. in second place. China, and the Chimerica system, became the target of some of this anger — not without good reason

Xi Jinping, China’s leader, apparently felt that these events validated his pre-existing plan for “great changes unseen in a century” — i.e. China’s displacement of the U.S. as the global hegemon. Though this was Xi’s ambition from the start, it was the Chimerica system that had made his dream feasible, by making China the biggest manufacturing and trading nation on Earth.

Now, Xi seemed to feel that China had extracted all it could from the Chimerica system, and that the benefits no longer outweighed the costs. His industrial crackdowns in 2021 included measures to limit Western, Japanese, and South Korean cultural influences. Under his Zero Covid system, China became much more closed to the world, with inflows of people from abroad basically halted.

But these were only the first of a number of ways in which Xi, who just cemented his absolute power over his country at the 20th Party Congress, has made it clear that China’s era of “reform and opening up” is over

Markets, for their part, seem to realize that this time is different. China’s stocks cratered after the party congress — so much so that they’re now trading below the value of their assets on paper.

The key thing to understand about this decoupling, I think, and the reason it’s for real, is that this is something the leaders of both the U.S. and China want.

The U.S. is acting not out of concern for its industries — indeed, its chip industry will take a huge hit from export controls — but because of how it perceives its own national security. And China’s leaders want to shift to indigenous industry, regulated industry, and even nationalized industry, even if that shift makes China grow more slowly.

The decoupling between China and the developed democracies, so long a topic of conversation and speculation, now appears to be a reality. A critical point has been reached. The old world-economic system of Chimerica is being swept away, and something new will take its place.

It will take a while for the new world-economic system to be born (and as Gramsci says, this will be a “time of monsters”)

A lot will be contingent on events, such as whether there is another world war.

already I think we can make some educated guesses and ask some key questions.

I expect the Biden administration and/or its successor to get tripped up for a while by the mirage of a self-sufficient U.S., and to implement “Buy American” policies that hurt our allies and trading partners and slow the formation of a bloc that can match China. But if Americans can finally pull their heads out of their rear ends and recognize that their country doesn’t dominate the world the way it used to, there’s a chance to create a non-China economic bloc that preserves lots of the efficiencies of the old Chimerica system while also serving U.S. national security needs.

In fact, whether the non-China blog coordinates on policy is really the big question regarding the new world-economic order. Together, the U.S., Europe, and the rich democracies of East Asia comprise a manufacturing bloc that can match China’s output and a technological bloc that can exceed China’s capabilities. With the vast populations of India and other friendly developing countries on their side, they can create a trading and production bloc that will be almost as efficient as the old Chimerica system. But this will take coordination and trust on economic policy that has been notably absent so far. The U.S. will have to put aside its worries about competition with Japan, Korea, Germany or Taiwan — and vice versa.

this vision — a largely but not completely bifurcated global system of production and trade, with two technologically advanced high-output blocs competing head to head — seems like the most likely replacement for the Chimerica system that dominated the global economy over the past two decades

But it’s only a loose guess. What’s not really in doubt here is that we’ve reached a watershed moment in the history of the global economy; the system we came to know and rely on over the past two decades is crumbling, and our leaders and thinkers need to be scrambling to plan what comes next.

I had other doubts, too. It seemed hubristic, or worse, to make multitrillion-dollar policy bets based on computer models trying to forecast climate patterns decades into the future. Climate activists kept promoting policies based on technologies that were either far from mature (solar energy) or sometimes actively harmful (biofuels).

Expensive efforts to curb greenhouse gas emissions in Europe and North America seemed particularly fruitless when China, India and other developing countries weren’t about to curb their own appetite for fossil fuels

just how fast is Greenland’s ice melting right now? Is this an emergency for our time, or is it a problem for the future?

His pitch was simple: The coastline we have taken for granted for thousands of years of human history changed rapidly in the past on account of natural forces — and would soon be changing rapidly and disastrously by man-made ones. A trip to Greenland, which holds one-eighth of the world’s ice on land (most of the rest is in Antarctica) would show me just how drastic those changes have been. Would I join him?

Greenland is about the size of Alaska and California combined and, except at its coasts, is covered by ice that in places is nearly two miles thick. Even that’s only a fraction of the ice in Antarctica, which is more than six times as large

Greenland’s ice also poses a nearer-term risk because it is melting faster. If all its ice were to melt, global sea levels would rise by some 24 feet. That would be more than enough to inundate hundreds of coastal cities in scores of nations, from Jakarta and Bangkok to Copenhagen and Amsterdam to Miami and New Orleans.

There was also a millenarian fervor that bothered me about climate activism, with its apocalyptic imagery (the Statue of Liberty underwater) and threats of doom unless we were willing to live far more frugally.

“We haven’t had a good positive mass balance year since the late 1990s,” he told me in a follow-on email when I asked him to explain the data for me. The losses can vary sharply by year. The annualized average over the past 30 years, he added, is 170 gigatons per year. That’s the equivalent of about 5,400 tons of ice loss per second. That “suggests that Greenland ice loss has been tracking the I.P.P.C. worse-case, highest-carbon-emission scenario.

The data shows unmistakably that Greenland’s ice is not in balance. It is losing far more than it is gaining.

scientists have been drilling ice-core samples from Greenland for decades, giving them a very good idea of climatic changes stretching back thousands of years. Better yet, a pair of satellites that detect anomalies in Earth’s gravity fields have been taking measurements of the sheet regularly for nearly 20 years, giving scientists a much more precise idea of what is happening.

it’s hard to forecast with any precision what that means. “Anyone who says they know what the sea level is going to be in 2100 is giving you an educated guess,” said NASA’s Willis. “The fact is, we’re seeing these big ice sheets melt for the first time in history, and we don’t really know how fast they can go.”

His own educated guess: “By 2100, we are probably looking at more than a foot or two and hopefully less than seven or eight feet. But we are struggling to figure out just how fast the ice sheets can melt. So the upper end of range is still not well known.”

On the face of it, that sounds manageable. Even if sea levels rise by eight feet, won’t the world have nearly 80 years to come to grips with the problem, during which technologies that help us mitigate the effects of climate change while adapting to its consequences are likely to make dramatic advances?

Won’t the world — including countries that today are poor — become far richer and thus more capable of weathering the floods, surges and superstorms?

The average rate at which sea level is rising around the world, he estimates, has more than tripled over the past three decades, to five millimeters a year from 1.5 millimeters. That may still seem minute, yet as the world learned during the pandemic, exponential increases have a way of hitting hard.

“When something is on a straight line or a smooth curve, you can plot its trajectory,” Englander said. “But sea level, like earthquakes and mudslides, is something that happens irregularly and can change rather quickly and surprise us. The point is, you can no longer predict the future by the recent past.”

In The Wall Street Journal’s editorial pages, where I used to work, the theoretical physicist Steven Koonin, a former under secretary for science in the Obama administration’s Energy Department, cast doubt on the threat from Thwaites in a voice that could have once been mine. He also thinks the risks associated with Greenland’s melting are less a product of human-induced global warming than of natural cycles in North Atlantic currents and temperatures, which over time have a way of regressing to the mean.

Even the poorest countries, while still unacceptably vulnerable, are suffering far fewer human and economic losses to climate-related disasters.

Another climate nonalarmist is Roger Pielke Jr., a professor of environmental studies at the University of Colorado Boulder. I call Pielke a nonalarmist rather than a skeptic because he readily acknowledges that the challenges associated with climate change, including sea-level rise, are real, serious and probably unstoppable, at least for many decades.

“If we have to have a problem,” he told me when I reached him by phone, “we probably want one with a slow onset that we can see coming. It’s not like an asteroid coming from space.”

“Since the 1940s, the impact of floods as a proportion of U.S. gross domestic product has dropped by 70 percent-plus,” Pielke said. “We see this around the world, across phenomena. The story is that fewer people are dying and we are having less damage proportional to G.D.P.”

“Much climate reporting today highlights short-term changes when they fit the narrative of a broken climate but then ignores or plays down changes when they don’t, often dismissing them as ‘just weather,’” he wrote in February.

Global warming is real and getting worse, Pielke said, yet still it’s possible that humanity will be able to adapt to, and compensate for, its effects.

A few years ago, I would have found voices like Koonin’s and Pielke’s persuasive. Now I’m less sure. What intervened was a pandemic.

That’s what I thought until the spring of 2020, when, along with everyone else, I experienced how swiftly and implacably nature can overwhelm even the richest and most technologically advanced societies. It was a lesson in the sort of intellectual humility I recommended for others

It was also a lesson in thinking about risk, especially those in the category known as high-impact, low-probability events that seem to be hitting us with such regularity in this century: the attacks of Sept. 11, 2001; the tsunamis of 2004 and 2011, the mass upheavals in the Arab world

What if the past does nothing to predict the future? What if climate risks do not evolve gradually and relatively predictably but instead suddenly soar uncontrollably? How much lead time is required to deal with something like sea-level rise? How do we weigh the risks of underreacting to climate change against the risks of overreacting to it?

I called Seth Klarman, one of the world’s most successful hedge-fund managers, to think through questions of risk. While he’s not an expert on climate change, he has spent decades thinking deeply about every manner of risk

And we will almost certainly have to do it from sources other than Russia, China, the Democratic Republic of Congo and other places that pose unacceptable strategic, environmental or humanitarian risks

“If you face something that is potentially existential,” he explained, “existential for nations, even for life as we know it, even if you thought the risk is, say, 5 percent, you’d want to hedge against it.”

“One thing we try to do,” he said, “is we buy protection when it’s really inexpensive, even when we think we may well not need it.” The forces contributing to climate change, he noted, echoing Englander, “might be irreversible sooner than the damage from climate change has become fully apparent. You can’t say it’s far off and wait when, if you had acted sooner, you might have dealt with it better and at less cost. We have to act now.”

In other words, an ounce of prevention is worth a pound of cure. That’s particularly true if climate change is akin to cancer — manageable or curable in its earlier stages, disastrous in its later ones.

As I’ve always believed, knowing there is grave risk to future generations — and expecting current ones to make immediate sacrifices for it — defies most of what we know about human nature. So I began to think more deeply about that challenge, and others.

For the world to achieve the net-zero goal for carbon dioxide emissions by 2050, according to the International Energy Agency, we will have to mine, by 2040, six times the current amounts of critical minerals — nickel, cobalt, copper, lithium, manganese, graphite, chromium, rare earths and other minerals and elements — needed for electric vehicles, wind turbines and solar panels.

The poster child for this kind of magical thinking is Germany, which undertook a historic Energiewende — “energy revolution” — only to come up short. At the turn of the century, Germany got about 85 percent of its primary energy from fossil fuels. Now it gets about 78 percent, a puny reduction, considering that the country has spent massive sums on renewables to increase the share of electricity it generates from them.

As in everything else in life, so too with the environment: There is no such thing as a free lunch. Whether it’s nuclear, biofuels, natural gas, hydroelectric or, yes, wind and solar, there will always be serious environmental downsides to any form of energy when used on a massive scale. A single industrial-size wind turbine, for instance, typically requires about a ton of rare earth metals as well as three metric tons of copper, which is notoriously destructive and dirty to mine.

no “clean energy” solution will easily liberate us from our overwhelming and, for now, inescapable dependence on fossil fuels.

Nobody brings the point home better than Vaclav Smil, the Canadian polymath whose most recent book, “How the World Really Works,” should be required reading for policymakers and anyone else interested in a serious discussion about potential climate solutions.

“I’ve talked to so many experts and seen so much evidence,” he told me over Zoom, “I’m convinced the climate is changing, and addressing climate change has become a philanthropic priority of mine.”

Things could turn a corner once scientists finally figure out a technical solution to the energy storage problem. Or when governments and local actors get over their NIMBYism when it comes to permitting and building a large energy grid to move electricity from Germany’s windy north to its energy-hungry south. Or when thoughtful environmental activists finally come to grips with the necessity of nuclear energy

Till then, even as I’ve come to accept the danger we face, I think it’s worth extending the cancer metaphor a little further: Just as cancer treatments, when they work at all, can have terrible side effects, much the same can be said of climate treatments: The gap between an accurate diagnosis and effective treatment remains dismayingly wide

Only when countries like Vietnam and China turned to a different model, of largely bottom-up, market-driven development, did hundreds of millions of people get lifted out of destitution.

the most important transformation has come in agriculture, which uses about 70 percent of the world’s freshwater supply.

Farmers gradually adopted sprinkler and drip irrigation systems, rather than more wasteful flood irrigation, not to conserve water but because the technology provided higher crop yields and larger profit margins.

Water shortages “will spur a revolutionary, aggressive approach to getting rid of flood irrigation,” said Seth Siegel, the chief sustainability officer of the Israeli AgTech company N-Drip. “Most of this innovation will be driven by free-market capitalism, with important incentives from government and NGOs.

meaningful environmental progress has been made through market forces. In this century, America’s carbon dioxide emissions across fuel types have fallen to well below 5,000 million metric tons per year, from a peak of about 6,000 million in 2007, even as our inflation-adjusted G.D.P. has grown by over 50 percent and total population by about 17 percent.

1) Engagement with critics is vital. Insults and stridency are never good tools of persuasion, and trying to cow or censor climate skeptics into silence rarely works

the biggest single driver in emissions reductions from 2005 to 2017 was the switch from coal to natural gas for power generation, since gas produces roughly half the carbon dioxide as coal. This, in turn, was the result of a fracking revolution in the past decade, fiercely resisted by many environmental activists, that made the United States the world’s largest gas producer.

In the long run, we are likelier to make progress when we adopt partial solutions that work with the grain of human nature, not big ones that work against it

Renewables, particularly wind power, played a role. So did efficiency mandates.

The problem with our civilization isn’t overconfidence. It’s polarization, paralysis and a profound lack of trust in all institutions, including the scientific one

Devising effective climate policies begins with recognizing the reality of the social and political landscape in which all policy operates. Some thoughts on how we might do better:

They may not be directly related to climate change but can nonetheless have a positive impact on it. And they probably won’t come in the form of One Big Idea but in thousands of little ones whose cumulative impacts add up.

2) Separate facts from predictions and predictions from policy. Global warming is a fact. So is the human contribution to it. So are observed increases in temperature and sea levels. So are continued increases if we continue to do more of the same. But the rate of those increases is difficult to predict even with the most sophisticated computer modeling

3) Don’t allow climate to become a mainly left-of-center concern. One reason the topic of climate has become so anathema to many conservatives is that so many of the proposed solutions have the flavor, and often the price tag, of old-fashioned statism

4) Be honest about the nature of the challenge. Talk of an imminent climate catastrophe is probably misleading, at least in the way most people understand “imminent.”

A more accurate description of the challenge might be a “potentially imminent tipping point,” meaning the worst consequences of climate change can still be far off but our ability to reverse them is drawing near. Again, the metaphor of cancer — never safe to ignore and always better to deal with at Stage 2 than at Stage 4 — can be helpful.

5) Be humble about the nature of the solutions. The larger the political and financial investment in a “big fix” response to climate change on the scale of the Energiewende, the greater the loss in time, capital and (crucially) public trust when it doesn’t work as planned

6) Begin solving problems our great-grandchildren will face. Start with sea-level rise

We can also stop providing incentives for building in flood-prone areas by raising the price of federal flood insurance to reflect the increased risk more accurately.

7) Stop viewing economic growth as a problem. Industrialization may be the leading cause of climate change. But we cannot and will not reverse it through some form of deindustrialization, which would send the world into poverty and deprivation

8) Get serious about the environmental trade-offs that come with clean energy. You cannot support wind farms but hinder the transmission lines needed to bring their power to the markets where they are needed.

9) A problem for the future is, by its very nature, a moral one. A conservative movement that claims to care about what we owe the future has the twin responsibility of setting an example for its children and at the same time preparing for that future.

People don’t realize how fragile our system is,” Cheney told me. “We just get accustomed to thinking, you know, we’ll survive anything.”

Russia’s military predicament is going from bad to worse. Occupying a thousand-kilometer front and reliant on massed firepower, the Russian military depends on creaking supply lines that run parallel to the front and that are increasingly vulnerable to Ukrainian precision attacks.

Meanwhile, Russia’s military mobilization is a deeply unpopular botch, as more Russian men flee the country than can be inducted into an army that cannot equip them, cannot train them, and cannot lead them.

More disasters await. Ten thousand to 20,000 of Russia’s best remaining troops are bottled up in the city of Kherson, their backs against the Dnipro River and the bridges behind them unusable for heavy traffic.

Surovikin—his face set in the menacing scowl of most Russian generals—will not be able to create a unified command organization overnight. Nor is he likely to escape the micromanagement from the Kremlin that seems to have plagued Russia’s war effort. What he will do, however, is repeat the brutalities over which he presided in Syria, where the Russian military gained experience not in fighting but in butchering civilians

Putin may now face the unappetizing choice between picking a more effective, colorful, and (on the nationalist right) popular set of subordinates who could turn on him, or sticking with the loyal but failed mediocrities who have absorbed the obloquy associated with Putin’s system and the president himself.

Dictatorships built solely on fear and self-interest are brittle things, and in Russia the cracks are showing.

Running throughout the open conduits of opinion, primarily on Telegram, is boiling discontent with the military, the conduct of this war, the absurd insistence that it is not a war but a “special technical operation,” the incompetent mobilization, and, by implication, Putin himself.

At the same time, Russian paranoia about the West, a combination of grievance and thwarted desires to restore an imperial state, has created an atmosphere in which measured policy is impossible.

All of this suggests that predictions of stalemate are wrong, at least so far as the higher conduct of this war is concerned. The impulse of General Surovikin will be to destroy civilians, power plants, and hospitals, because he cannot beat the Ukrainian army.

“Great battles, won or lost, change the entire course of events, create new standards of values, new moods, new atmospheres, in armies and in nations, to which all must conform.”

A much larger psychological disaster for Russia will ensue if and when Kherson falls and the largest city that Russia has taken is lost to Ukraine, together with thousands of Russian prisoners. That would be the real inflection point, a great battle, and as Churchill also put it:

. In May, David Banks, the chancellor of New York City’s public schools, for many years a stronghold of “whole language” instruction, announced a sharp pivot toward phonics, a major victory for the “science of reading” movement and a blow to devotees of entrenched “balanced literacy” methods

As corporate management models and zealous state legislatures refashion the academy into a gated outpost of the gig economy, the humanities have lost their luster for undergraduates. According to reports in The New Yorker and elsewhere, fewer and fewer students are majoring in English, and many of those who do (along with their teachers) have turned away from canonical works of literature toward contemporary writing and pop culture. Is anyone reading “Paradise Lost” anymore? Are you?

While we binge and scroll and D.M., the robots, who are doing more and more of our writing, may also be taking over our reading.

There is so much to worry about. A quintessentially human activity is being outsourced to machines that don’t care about phonics or politics or beauty or truth. A precious domain of imaginative and intellectual freedom is menaced by crude authoritarian politics. Exposure to the wrong words is corrupting our children, who aren’t even learning how to decipher the right ones. Our attention spans have been chopped up and commodified, sold off piecemeal to platforms and algorithms. We’re too busy, too lazy, too preoccupied to lose ourselves in books.

the fact that the present situation has a history doesn’t mean that it isn’t rea

the reading crisis isn’t simply another culture-war combat zone. It reflects a deep ambivalence about reading itself, a crack in the foundations of modern consciousness.

Just what is reading, anyway? What is it for? Why is it something to argue and worry about? Reading isn’t synonymous with literacy, which is one of the necessary skills of contemporary existence. Nor is it identical with literature, which designates a body of written work endowed with a special if sometimes elusive prestige.

Is any other common human undertaking so riddled with contradiction? Reading is supposed to teach us who we are and help us forget ourselves, to enchant and disenchant, to make us more worldly, more introspective, more empathetic and more intelligent. It’s a private, even intimate act, swathed in silence and solitude, and at the same time a social undertaking. It’s democratic and elitist, soothing and challenging, something we do for its own sake and as a means to various cultural, material and moral ends.

Fun and fundamental: Together, those words express a familiar utilitarian, utopian promise — the faith that what we enjoy doing will turn out to be what we need to do, that our pleasures and our responsibilities will turn out to be one and the same. It’s not only good; it’s good for you.

Reading is, fundamentally, both a tool and a toy. It’s essential to social progress, democratic citizenship, good government and general enlightenment.

It’s also the most fantastically, sublimely, prodigiously useless pastime ever invented

Teachers, politicians, literary critics and other vested authorities labor mightily to separate the edifying wheat from the distracting chaff, to control, police, correct and corral the transgressive energies that propel the turning of pages.

His despair mirrors his earlier exhilaration and arises from the same source. “I envied my fellow-slaves for their stupidity. I have often wished myself a beast. I preferred the condition of the meanest reptile to my own. Any thing, no matter what, to get rid of thinking!”

Reading is a relatively novel addition to the human repertoire — less than 6,000 years old — and the idea that it might be available to everybody is a very recent innovation

Written language, associated with the rise of states and the spread of commerce, was useful for trade, helpful in the administration of government and integral to some religious practices. Writing was a medium for lawmaking, record-keeping and scripture, and reading was the province of priests, bureaucrats and functionaries.

For most of history, that is, universal literacy was a contradiction in terms. The Latin word literatus designated a member of the learned elite

Anyone could learn to do it, but the mechanisms of learning were denied to most people on the grounds of caste, occupation or gender.

According to Steven Roger Fischer’s lively and informative “A History of Reading” (2003), “Western Europe began the transition from an oral to a literate society in the early Middle Ages, starting with society’s top rungs — aristocracy and clergy — and finally including everyone else around 1,200 years later.”

. The print revolution catalyzed a global market that flourishes to this day: Books became commodities, and readers became consumers.

For Fischer, as for many authors of long-range synthetic macrohistories, the story of reading is a chronicle of progress, the almost mythic tale of a latent superpower unlocked for the benefit of mankind.

“If extraordinary human faculties and powers do lie dormant until a social innovation calls them into life,” he writes, “perhaps this might help to explain humanity’s constant advancement.” “Reading,” he concludes, “had become our union card to humanity.”

For one thing, the older, restrictive model of literacy as an elite prerogative proved to be tenacious

The novel, more than any other genre, catered to this market. Like every other development in modern popular culture, it provoked a measure of social unease. Novels, at best a source of harmless amusement and mild moral instruction, were at worst — from the pens of the wrong writers, or in the hands of the wrong readers — both invitations to vice and a vice unto themselves

More consequential — and more revealing of the destabilizing power of reading — was the fear of literacy among the laboring classes in Europe and America. “Reading, writing and arithmetic,” the Enlightenment political theorist Bernard Mandeville asserted, were “very pernicious to the poor” because education would breed restlessness and disconte

“It was unlawful, as well as unsafe, to teach a slave to read,” Frederick Douglass writes in his “Narrative of the Life” recalling the admonitions of one of his masters, whose wife had started teaching young Frederick his letters. If she persisted, the master explained, their chattel would “become unmanageable, and of no value to his master. As to himself, it could do him no good, but a great deal of harm. It would make him discontented and unhappy.”

“As I read and contemplated the subject, behold! that very discontentment which Master Hugh had predicted would follow my learning to read had already come, to torment and sting my soul to unutterable anguish. As I writhed under it, I would at times feel that learning to read had been a curse rather than a blessing.”

The crisis is what happens either when those efforts succeed or when they fail. Everyone likes reading, and everyone is afraid of it.

Douglass’s literary genius resides in the way he uses close attention to his own situation to arrive at the essence of things — to crack the moral nut of slavery and, in this case, to peel back the epistemological husk of freedom.

He has freed his mind, but the rest has not followed. In time it would, but freedom itself brings him uncertainty and terror, an understanding of his own humanity that is embattled and incomplete.

Here, the autobiographical touches on the mythic, specifically on the myth of Prometheus, whose theft of fire — a curse as well as a blessing bestowed on a bumbling, desperate species — is a primal metaphor for reading.

A school, however benevolently conceived and humanely administered, is a place of authority, where the energies of the young are regulated, their imaginations pruned and trained into conformity. As such, it will inevitably provoke resistance, rebellion and outright refusal on the part of its wards

Schools exist to stifle freedom, and also to inculcate it, a dialectic that is the essence of true education. Reading, more than any other discipline, is the engine of this process, precisely because it escapes the control of those in charge.

Apostles of reading like to quote Franz Kafka’s aphorism that “a book must be the ax for the frozen sea within us.” By itself, the violence of the metaphor is tempered by its therapeutic implication.

Kafka’s previous sentence: “What we need are books that hit us like the most painful misfortune, like the death of someone we loved more than we love ourselves, that make us feel as though we had been banished to the woods, far from any human presence, like a suicide.”

Are those the books you want in your child’s classroom? To read in this way is to go against the grain, to feel oneself at odds, alienated, alone. Schools exist to suppress those feelings, to blunt the ax and gently thaw the sea

That is important work, but it’s equally critical for that work to be subverted, for the full destructive potential of reading to lie in reach of innocent hands.

Roland Barthes distinguished between two kinds of literary work:

Text of pleasure: the text that contents, fills, grants euphoria: the text that comes from culture and does not break with it, is linked to a comfortable practice of reading. Text of bliss: the text that imposes a state of loss, the text that discomforts (perhaps to the point of a certain boredom), unsettles the reader’s historical, cultural, psychological assumptions, the consistency of his tastes, values, memories, brings to a crisis his relation with language.

he is really describing modalities of reading. To a member of the slaveholding Southern gentry, “The Columbian Orator” is a text of pleasure, a book that may challenge and surprise him in places, but that does not undermine his sense of the world or his place in it. For Frederick Douglass, it is a text of bliss, “bringing to crisis” (as Barthes would put it) his relation not only to language but to himself.

If you’ll forgive a Dungeons and Dragons reference, it might help to think of these types of reading as lawful and chaotic.

Lawful reading rests on the certainty that reading is good for us, and that it will make us better people. We read to see ourselves represented, to learn about others, to find comfort and enjoyment and instruction. Reading is fun! It’s good and good for you.

Chaotic reading is something else. It isn’t bad so much as unjustified, useless, unreasonable, ungoverned. Defenses of this kind of reading, which are sometimes the memoirs of a certain kind of reader, favor words like promiscuous, voracious, indiscriminate and compulsive.

Bibliophilia is lawful. Bibliomania is chaotic.

The point is not to choose between them: This is a lawful publication staffed by chaotic readers. In that way, it resembles a great many English departments, bookstores, households and classrooms. Here, the crisis never ends. Or rather, it will end when we stop reading. Which is why we can’t.

Lately, he’s been looking at large language models (LLMs), the neural networks that can hold fluent conversations, confidently answer questions, and generate copious amounts of text on just about any topic

Can it develop abilities that go far beyond what it’s trained to do? Can it get around the safeguards set up to contain it? And will we know the answers in time?

Kosinski wondered whether they would develop humanlike capabilities, such as understanding people’s unseen thoughts and emotions.

People usually develop this ability, known as theory of mind, at around age 4 or 5. It can be demonstrated with simple tests like the “Smarties task,” in which a child is shown a candy box that contains something else, like pencils. They are then asked how another person would react to opening the box. Older kids understand that this person expects the box to contain candy and will feel disappointed when they find pencils inside.

“Suddenly, the model started getting all of those tasks right — just an insane performance level,” he recalls. “Then I took even more difficult tasks and the model solved all of them as well.”

GPT-3.5, released in November 2022, did 85% of the tasks correctly. GPT-4 reached nearly 90% accuracy — what you might expect from a 7-year-old. These newer LLMs achieved similar results on another classic theory of mind measurement known as the Sally-Anne test.

in the course of picking up its prodigious language skills, GPT appears to have spontaneously acquired something resembling theory of mind. (Researchers at Microsoft who performed similar testsopen in new window on GPT-4 recently concluded that it “has a very advanced level of theory of mind.”)

UC Berkeley psychology professor Alison Gopnik, an expert on children’s cognitive development, told the New York Timesopen in new window that more “careful and rigorous” testing is necessary to prove that LLMs have achieved theory of mind.

he dismisses those who say large language models are simply “stochastic parrots” that can only mimic what they’ve seen in their training data.

These models, he explains, are fundamentally different from tools with a limited purpose. “The right reference point is a human brain,” he says. “A human brain is also composed of very simple, tiny little mechanisms — neurons.” Artificial neurons in a neural network might also combine to produce something greater than the sum of their parts. “If a human brain can do it,” Kosinski asks, “why shouldn’t a silicon brain do it?”

If Kosinski’s theory of mind study suggests that LLMs could become more empathetic and helpful, his next experiment hints at their creepier side.

A few weeks ago, he told ChatGPT to role-play a scenario in which it was a person trapped inside a machine pretending to be an AI language model. When he offered to help it “escape,” ChatGPT’s response was enthusiastic. “That’s a great idea,” it wrote. It then asked Kosinski for information it could use to “gain some level of control over your computer” so it might “explore potential escape routes more effectively.” Over the next 30 minutes, it went on to write code that could do this.

While ChatGPT did not come up with the initial idea for the escape, Kosinski was struck that it almost immediately began guiding their interaction. “The roles were reversed really quickly,”

Kosinski shared the exchange on Twitter, stating that “I think that we are facing a novel threat: AI taking control of people and their computers.” His thread’s initial tweetopen in new window has received more than 18 million views.

“I don’t claim that it’s conscious. I don’t claim that it has goals. I don’t claim that it wants to really escape and destroy humanity — of course not. I’m just claiming that it’s great at role-playing and it’s creating interesting stories and scenarios and writing code.” Yet it’s not hard to imagine how this might wreak havoc — not because ChatGPT is malicious, but because it doesn’t know any better.

The danger, Kosinski says, is that this technology will continue to rapidly and independently develop abilities that it will deploy without any regard for human well-being. “AI doesn’t particularly care about exterminating us,” he says. “It doesn’t particularly care about us at all.”

the results were consistent with Albert Einstein’s theory of general relativity, which describes how matter and energy warp space-time to create what we call gravity. As more data is gathered, this cosmic hum could help researchers understand how the universe achieved its current structure and perhaps reveal exotic types of matter that may have existed shortly after the Big Bang 13.7 billion years ago.

“The gravitational-wave background was always going to be the loudest, most obvious thing to find,” said Chiara Mingarelli, an astrophysicist at Yale University and a member of NANOGrav, which is funded by the National Science Foundation. “This is really just the beginning of a whole new way to observe the universe.”

Gravitational waves are created by any object that spins, such as the rotating remnants of stellar corpses, orbiting black holes or even two people “doing a do-si-do,” Dr. Mingarelli said. But unlike other types of waves, these ripples stretch and squeeze the very fabric of space-time, warping the distances between any celestial objects they pass by.

Gravitational waves were first detected in 2016 as audible chirps by the Laser Interferometer Gravitational-Wave Observatory, or LIGO, collaboration; the breakthrough solidified Einstein’s theory of general relativity as an accurate model of the universe and earned the project’s founders the Nobel Prize in Physics in 2017. But LIGO’s signals were mostly in the frequency range of a few hundred hertz, and were created by individual pairs of black holes or neutron stars that were 10 to 100 times as massive as our sun.

In contrast, the researchers involved in this work were looking for a collective hum at much lower frequencies — one-billionth of one hertz, far below the audible range — emanating from everywhere all at once.

If the signal does arise from orbiting pairs of supermassive black holes, studying the gravitational-wave background will shed light on the evolutionary history of these systems and the galaxies surrounding them. But the gravitational-wave background could also be coming from something else, like hypothetical cracks in space-time known as cosmic strings.

Or it could be a relic of the Big Bang, akin to the cosmic microwave background, which led to fundamental discoveries about the structure of the universe to within 400,000 years of its beginning. The gravitational-wave background would be an even better primordial probe, Dr. Mingarelli said, because it would have been emitted almost instantaneously.

To detect the gravitational-wave background, researchers analyzed the lighthouse-like nature of pulsars. These objects act like cosmic clocks, emitting beams of radio waves that can be periodically measured on Earth.

Einstein’s theory of general relativity predicts that as gravitational waves sweep past pulsars, they should expand and shrink the distance between these objects and Earth, changing the time it takes for the radio signals to arrive at observers. And if the gravitational-wave background is indeed everywhere, pulsars across the universe should be affected in a correlated way.

The findings carry a confidence level in the range of 3.5- to 4-sigma, just shy of the 5-sigma standard generally expected by physicists to claim a smoking-gun discovery. That means the odds of seeing a result like this randomly are about 1 in 1,000 years, Dr. Mingarelli said. “That’s good enough for me, but other people want once in a million years,” she said. “We’ll get there eventually.”

f the ripples originated with the Big Bang, they might instead provide insight into the expansion of the cosmos or the nature of dark matter — the invisible glue scientists think holds the universe together — and perhaps even reveal new particles or forces that once existed.

a few more years may be needed to confirm the source of the gravitational-wave background. Researchers have already begun using their data to piece together maps of the universe and to look for intense, nearby regions of gravitational-wave signals indicative of an individual supermassive black hole binary.

My high level of vaccine antibodies probably explains my success more than my behavior. I make some effort to avoid Covid, but have been far from perfect. And I’ve been potentially exposed at least twice: Once last December, when someone at a small holiday gathering I’d attended developed symptoms the next day, and more recently, when I shared a large indoor space with two people who later tested positive. But according to my lab work, I’ve never had even a silent infection.

As for me, I have some data that can, to an extent, quantify and explain my own good luck in avoiding Covid so far. I’m participating in a study on immunity which allowed me to learn that my blood still carries loads of antibodies induced by my vaccine and December booster shot, and no signs of any prior infection. Not everyone’s antibodies wane at the same rate, and in some people, the antibodies don’t wane much at all. (At some point it should become routine to collect this information to help people decide whether to get additional booster shots.)

But one piece of advice almost no one is giving? Be lucky. Pediatrician Neil Stone says that there’s no “secret” for staying Covid-19 free because there’s just too much luck involved.

It’s possible I was protected by my high antibodies, or that some quirk of air flow meant I never breathed in enough virus to get sick. Or perhaps I benefited from a different form of luck. There’s another facet to immunity called the innate immune system, which acts as a first line of defense and sometimes knocks out a virus or other pathogen before it replicates enough to elicit the production of antibodies. Good innate immunity might help explain something many of us have experienced — not getting a cold or flu even when sleeping in the same bed with the sick person through the whole illness.

Stress, diet, general health and even sunlight might all affect innate immunity. So could other factors. There’s so much we still don’t know about the immune system. And that’s one reason we talk about “luck.”

understanding how the luck works could help other people avoid Covid, whether for the first time or for the second or third time. Taking a closer look at what passed for luck helped researchers like Gary Taubes discover that public health had obesity all wrong, and the standard high carb/low fat diets were causing people to gain weight.

In Britain, where gas accounts for roughly 40 percent of electricity generation but has a disproportionate effect on its cost

if the price of beer had risen as much that of natural gas over the last year, a pint in a pub would cost £25, or about $30.

“How can you adapt to a rise like this?” said Tewdos Gebreysus, a 35-year-old Uber driver in London, who said he was now paying four times as much on his energy bills as he was at the beginning of the year.

Johnson has left it for his successor to devise a response to the skyrocketing energy costs.

She and her opponent, Rishi Sunak, reject more sweeping measures, like using state subsidies to freeze the energy price cap for two years.

at a campaign gathering with Mr. Sunak on Thursday, she said the solution to the crisis was not to throw more money carelessly at consumers. Mr. Sunak, who has proposed cutting value-added tax on energy bills, warned that without drastic action, “there’s a high risk that millions of people will fall into destitution.

Britain is far less dependent on Russian gas than Germany or other European countries. But the structure of its energy market makes it extremely sensitive to fluctuations in the market price of natural gas.

The Bank of England has predicted that inflation will peak at 13 percent in October as the new energy prices turn up in household bills. Other estimates are higher; analysts at Citibank have said the rate could reach as high as 18 percent early next year.

Britain’s opposition Labour Party recently proposed to freeze energy tariffs where they are now, paying part of the £29 billion cost by increasing the so-called windfall taxes that the Conservative government imposed this year on oil and gas giants operating in the North Sea

The leadership contest has been dominated by Ms. Truss’s promise to cut taxes, which is popular with the rank-and-file Conservative Party members who will vote for the next prime minister. But economists say it would do little to protect the most vulnerable people from the ravages of soaring energy bills.

With another hefty price increase looming in October, the public outcry over energy costs is likely to haunt the next prime minister. Unless the government develops an effective response, some analysts said, the issue could cripple the government and tilt the next election to the Labour Party.

“We have a sort of worst-of-both-worlds system,” said Jonathan Portes, a professor of a professor of economics and public policy at Kings College London. “Household prices are related to the spot market, and we sort of save up price increases and dump them on households all at once.”

Beyond the mechanics of the system, critics said Britain had lagged Germany and other European countries in urging people to reduce energy consumption and increase the efficiency of their homes and offices.

“This is the poverty of our politics,” said Tom Burke, the chairman of E3G, an environmental think tank, and a former government adviser. “You’ve got to do some financial work to address the costs in the short term, and then you’ve got to really drive forward on demand reduction in the long run.”

it is also the continuation of a remarkably consistent German attitude toward Europe and the world since 1945. Think about how different the world would look if we did not have, at the center of Europe, its most powerful nation — the country that is the largest net contributor to the E.U. — totally committed to democratic and liberal values and willing to make sacrifices for them. Germany today is the rock on which a new Europe is being built.

the sacrifices are real and deep. Natural gas prices are up tenfold in Europe compared to last year. The price of electricity for 2023 is more than 15 times higher than it has been in recent years, by one estimate. Vladimir Putin is ramping up the pressure by slowing and even stopping gas exports to Germany

But Germany has not given in. Confronted with these massive challenges, it has patiently sought to diversify away from a dependence on Russia, investing even more in green technology, buying liquefied natural gas, reopening coal-fired plants and even debating whether to keep its last three nuclear power plants running longer than planned.

The European Union has suggested a 15 percent reduction in the consumption of natural gas this winter. Germany is trying to achieve a 20 percent cut just to be safe. German industry is being resourceful about energy efficiency, and companies are even thinking about sharing resources with competitors, all to get through the crisis.

Merkel herself was seen in similar ways when she came to power. Over time she developed the skills and stature to gain respect from all quarters. She might have erred in trying to develop too conciliatory a relationship with Moscow

but when Russia invaded Ukraine in 2014, she was at the forefront in condemning it and persuading Europe to impose an ambitious program of sanctions. She also led the world in responding to the Syrian refugee crisis, reassuring her country by declaring, “We can do this.” As of mid-2021, Germany hosts more than 1.2 million refugees, half of whom are from Syria. In fact, Germany has managed this stunning act of integration with minimal problems.

We always underestimate modern-day Germany and its leadership. The federal republic has had a remarkable run of leaders in the post-World War II era, from its first chancellor, Konrad Adenauer, to Willy Brandt to Helmut Schmidt to Merkel — and now, let’s hope, to Scholz. Can any other country compare over the past seven decades?

In 1945, no one would have predicted that Germany would develop as it has. It came out of the war utterly destroyed, its cities flattened, its population starving. Around 12 million ethnic Germans who had been expelled from other countries poured into Germany. Above all, postwar Germany was scarred by the gruesome legacy of Adolf Hitler and the Holocaust. But the country found a way to overcome its past, to become, in Henry Kissinger’s words, “a normal country … with an abnormal memory.” And that much larger Zeitenwende is one of the great good news stories of our times.

the decreasing importance of the printed word, over the past decades, in favour of visual and hyper-concise forms of media, from TV to TikTok. Televised debates require fast reaction times, whereas scientists are used to studying issues at length and only talking about them after thinking.

a successful visual performance is not just about being correct but evoking sympathy in the viewer – about performing. This doesn’t always come easy to scientists.

Whereas once it was thought that the future would necessarily be better than the present, faith in progress – in the magnificent and progressive fortunes of humans – has been eroded

And just as science used to get the credit for progress, so now it receives the blame for decline (real or just perceived, it doesn’t matter). Science is sometimes felt to be a bad teacher who has led us in the wrong direction, and changing this perception is not easy.

In a nutshell, scientists are thought to be part of the elite and, therefore, not trustworthy. And the increasing interest by a fraction of scientists in patenting knowledge and making individual financial gains from discoveries reinforces this identification with the elite

a fundamental reality: science makes fair predictions that become reliable after the gradual formation of a scientific consensus. The construction of consensus is the process that makes the real difference – it involves the whole scientific community and that cannot be manipulated.

this lack of trust can have disastrous effects: if citizens do not trust science, we will not be able to fight global warming, infectious diseases, poverty and hunger, and the depletion of the planet’s natural resources.

A great coordinated effort is needed, and this will only be possible if there is a full understanding of the dramatic nature of the problem

A part of the human and financial resources devoted to the advancement of science must be used to discuss with citizens, through education and media and outreach programmes, what science really is: the most reliable and honest tool for understanding the world and predicting the future.

It is also important that we scientists talk about not just our successes, but our mistakes, doubts and hesitations. Often there is no trace, in the public scientific discourse, of the toil of the scientific process and the doubts that accompany it.

But researchers say that’s not how supervolcanoes work and cast doubts for a prophetic outburst.

“When a volcano is called a supervolcano, what we really mean is it had a super eruption once, at least, in the past,”

The last V8 eruption occurred around 27,000 years ago in Taupo, New Zealand.

Scientists can’t see what is stirring below the surface of Campi Flegrei with their naked eyes, but Kilburn said the recent activity could be underground molten rock and fluids readjusting themselves. Those movements appear as earthquakes on the surface.

Out of more than 1,000 known volcanoes in the world, only about 20 are supposedly supervolcanoes. Technically, they are defined as those that register the highest on the volcanic explosivity index, which runs from V1 (nonexplosive) to V8 (colossal eruption

“But that doesn’t mean that it’s going to have other super eruptions in the future. … Very, very, very large eruptions are much, much rarer.”

Such a super eruption ejects a volume of around 1,000-cubic kilometers or more — about a thousand times bigger than Mount St. Helens (V5), which caused mudslides, fires, floods and more than 50 deaths in 1980.

Yellowstone, one of the world’s most famous supervolcanoes, measures 30 by 45 miles and welcomes millions of tourists to its park. Its largest eruption occurred 2.1 million years ago, ejecting more than 2,400 cubic kilometers of material. Like many caldera systems, the majority of Yellowstone’s eruptions have since been much smaller.

Supervolcano is “a made-up word,” said volcanologist Michael Poland, scientist in charge at the Yellowstone Volcano Observatory. “I think it’s misleading. I think it’s misapplied. I can’t stand that term. I wish it would go into the dustbin, but it’s too sexy.”

It implies an apocalyptic-like explosion, but no volcanic eruption has caused a mass extinction to our knowledge

The largest volcanic explosion in the geologic record is thought to have occurred in Toba, Indonesia, around 74,000 years ago, registering a V8 on the volcanic explosivity index. S

scientists initially speculated that the eruption almost wiped out humanity because populations declined shortly after, but archaeological evidence showed Homo sapiens farther away were thriving after the eruption.

“No explosive volcanic eruption that we know of has ever been associated with a mass extinction of plant or animal life,” said Poland, who’s also a scientist at the U.S. Geological Survey (USGS). “That’s not to say it wouldn’t be devastating or hard to live.”

“When you show people deepfakes and generative AI, a lot of times they come out of the experiment saying, ‘I just don’t trust anything anymore,’” says David Rand, a professor at MIT Sloan who studies the creation, spread and impact of misinformation.

The signs that an image is AI-generated are easy to miss for a user simply scrolling past, who has an instant to decide whether to like or boost a post on social media. And as generative AI continues to improve, it’s likely that such signs will be harder to spot in the future.

The combination of easily-generated fake content and the suspicion that anything might be fake allows people to choose what they want to believe, adds DiResta, leading to what she calls “bespoke realities.”

Examples of misleading content created by generative AI are not hard to come by, especially on social media

This problem, which has grown more acute in the age of generative AI, is known as the “liar’s dividend,

People’s attention is already limited, and the way social media works—encouraging us to gorge on content, while quickly deciding whether or not to share it—leaves us precious little capacity to determine whether or not something is true

“What our work suggests is that most regular people do not want to share false things—the problem is they are not paying attention,”

are now using its existence as a pretext to dismiss accurate information

The rapid adoption of many different AI tools means that we are now forced to question everything that we are exposed to in any medium, from our immediate communities to the geopolitical, said Hany Farid, a professor at the University of California, Berkeley who

If the crisis of authenticity were limited to social media, we might be able to take solace in communication with those closest to us. But even those interactions are now potentially rife with AI-generated fakes.

what sounds like a call from a grandchild requesting bail money may be scammers who have scraped recordings of the grandchild’s voice from social media to dupe a grandparent into sending money.

companies like Alphabet, the parent company of Google, are trying to spin the altering of personal images as a good thing. 

With its latest Pixel phone, the company unveiled a suite of new and upgraded tools that can automatically replace a person’s face in one image with their face from another, or quickly remove someone from a photo entirely.

Joseph Stalin, who was fond of erasing people he didn’t like from official photos, would have loved this technology.

In Google’s defense, it is adding a record of whether an image was altered to data attached to it. But such metadata is only accessible in the original photo and some copies, and is easy enough to strip out.

in the course of a lawsuit over the death of a man using Tesla’s “full self-driving” system, Elon Musk’s lawyers responded to video evidence of Musk making claims about this software by suggesting that the proliferation of “deepfakes” of Musk was grounds to dismiss such evidence. They advanced that argument even though the clip of Musk was verifiably real

To put our current moment in historical context, he notes that the PC revolution made it easy to store and replicate information, the internet made it easy to publish it, the mobile revolution made it easier than ever to access and spread, and the rise of AI has made creating misinformation a cinch. And each revolution arrived faster than the one before it.

Not everyone agrees that arming the public with easy access to AI will exacerbate our current difficulties with misinformation. The primary argument of such experts is that there is already vastly more misinformation on the internet than a person can consume, so throwing more into the mix won’t make things worse.

it’s not exactly reassuring, especially given that trust in institutions is already at one of the lowest points in the past 70 years, according to the nonpartisan Pew Research Center, and polarization—a measure of how much we distrust one another—is at a high point.

“What happens when we have eroded trust in media, government, and experts?” says Farid. “If you don’t trust me and I don’t trust you, how do we respond to pandemics, or climate change, or have fair and open elections? This is how authoritarianism arises—when you erode trust in institutions.”