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It’s dropping in developing countries, too. India surpassed China as the most populous country last year, yet its fertility is now below replacement.

“The demographic winter is coming,”

Smaller populations come with diminished global clout, raising questions in the U.S., China and Russia about their long-term standings as superpowers.

Some demographers think the world’s population could start shrinking within four decades—one of the few times it’s happened in history.

A year ago Japanese Prime Minister Fumio Kishida declared that the collapse of the country’s birthrate left it “standing on the verge of whether we can continue to function as a society.”

Had fertility stayed near 2.1, where it stood in 2007, the U.S. would have welcomed an estimated 10.6 million more babies since

In 2017, when the global fertility rate—a snapshot of how many babies a woman is expected to have over her lifetime—was 2.5, the United Nations thought it would slip to 2.4 in the late 2020s. Yet by 2021, the U.N. concluded, it was already down to 2.3—close to what demographers consider the global replacement rate of about 2.2

He has found that national birth registries are typically reporting births 10% to 20% below what the U.N. projected.

China reported 9 million births last year, 16% less than projected in the U.N.’s central scenario. In the U.S., 3.59 million babies were born last year, 4% less than the U.N. projected. In other countries, the undershoot is even larger: Egypt reported 17% fewer births last year. In 2022, Kenya reported 18% fewer.

In 2017 the U.N. projected world population, then 7.6 billion, would keep climbing to 11.2 billion in 2100. By 2022 it had lowered and brought forward the peak to 10.4 billion in the 2080s. That, too, is likely out of date

the University of Washington now thinks it will peak around 9.5 billion in 2061 then start declining. 

The falling birthrates come with huge implications for the way people live, how economies grow and the standings of the world’s superpowers.

In the U.S., a short-lived pandemic baby boomlet has reversed. The total fertility rate fell to 1.62 last year, according to provisional government figures, the lowest on record.

In 2017, when the fertility rate was 1.8, the Census Bureau projected it would converge over the long run to 2.0. It has since revised that down to 1.5. “It has snuck up on us,”

Historians refer to the decline in fertility that began in the 18th century in industrializing countries as the demographic transition. As lifespans lengthened and more children survived to adulthood, the impetus for bearing more children declined. As women became better educated and joined the workforce, they delayed marriage and childbirth, resulting in fewer children. 

Some demographers see this as part of a “second demographic transition,” a societywide reorientation toward individualism that puts less emphasis on marriage and parenthood, and makes fewer or no children more acceptable. 

In research published in 2021, the University of Maryland’s Kearney and two co-authors looked for possible explanations for the continued drop. They found that state-level differences in parental abortion notification laws, unemployment, Medicaid availability, housing costs, contraceptive usage, religiosity, child-care costs and student debt could explain almost none of the decline

“We suspect that this shift reflects broad societal changes that are hard to measure or quantify,” they conclude.

while raising children is no more expensive than before, parents’ preferences and perceived constraints have changed

“If people have a preference for spending time building a career, on leisure, relationships outside the home, that’s more likely to come in conflict with childbearing.” 

Once a low fertility cycle kicks in, it effectively resets a society’s norms and is thus hard to break, said Jackson. “The fewer children you see your colleagues and peers and neighbors having, it changes the whole social climate,”

Fertility is below replacement in India even though the country is still poor and many women don’t work—factors that usually sustain fertility.

Urbanization and the internet have given even women in traditional male-dominated villages a glimpse of societies where fewer children and a higher quality of life are the norm. “People are plugged into the global culture,

mothers and fathers, especially those that are highly educated, spend more time with their children than in the past. “The intensity of parenting is a constraint,”

Sub-Saharan Africa once appeared resistant to the global slide in fertility, but that too is changing. The share of all women of reproductive age using modern contraception grew from 17% in 2012 to 23% in 2022

Jose Rimon, a professor of public health at Johns Hopkins University, credits that to a push by national leaders in Africa which, he predicted, would drive fertility down faster than the U.N. projects. 

Mae Mariyam Thomas, 38, who lives in Mumbai and runs an audio production company, said she’s opted against having children because she never felt the tug of motherhood. She sees peers struggling to meet the right person, getting married later and, in some instances, divorcing before they have kids. At least three of her friends have frozen their eggs,

Danielle Vermeer grew up third in a family of four children on Chicago’s North Side, where her neighborhood was filled with Catholics of Italian, Irish and Polish descent and half her close friends had as many siblings as her or more.

Her Italian-American father was one of four children who produced 14 grandchildren. Now her parents have five grandchildren, including Vermeer’s two children, ages 4 and 7.

The 35-year-old, who is the co-founder of a fashion thrifting app, said that before setting out to have children, she consulted dozens of other couples and her Catholic church and read at least eight books on the subject, including one by Pope Paul VI. She and her husband settled on two as the right number.“The act of bringing a child into this world is an incredible responsibility,” she said.

Perhaps no country has been trying longer than Japan. After fertility fell to 1.5 in the early 1990s, the government rolled out a succession of plans that included parental leave and subsidized child care. Fertility kept falling.

In 2005, Kuniko Inoguchi was appointed the country’s first minister responsible for gender equality and birthrate. The main obstacle, she declared, was money: People couldn’t afford to get married or have children. Japan made hospital maternity care free and introduced a stipend paid upon birth of the child. 

Japan’s fertility rate climbed from 1.26 in 2005 to 1.45 in 2015. But then it started declining again, and in 2022 was back to 1.26.

This year, Prime Minister Fumio Kishida rolled out yet another program to increase births that extends monthly allowances to all children under 18 regardless of income, free college for families with three children, and fully paid parental leave.

noguchi, now a member of parliament’s upper house, said the constraint on would-be parents is no longer money, but time. She has pressed the government and businesses to adopt a four-day workweek

If you’re a government official or manager of a big corporation, you should not worry over questions of salary now, but that in 20 years time you will have no customers, no clients, no applicants to the Self-Defense Forces.”

Hungarian Prime Minister Viktor Orban has pushed one of Europe’s most ambitious natality agendas. Last year he expanded tax benefits for mothers so that women under the age of 30 who have a child are exempt from paying personal income tax for life. That’s on top of housing and child-care subsidies as well as generous maternity leaves. 

Hungary’s fertility rate, though still well below replacement, has risen since 2010. But the Vienna Institute of Demography attributed this primarily to women delaying childbirth because of a debt crisis that hit around 2010. Adjusted for that, fertility has risen only slightly, it concluded.

The usual prescription in advanced countries is more immigration, but that has two problems.

With no reversal in birthrates in sight, the attendant economic pressures are intensifying. Since the pandemic, labor shortages have become endemic throughout developed countries. That will only worsen in coming years as the postcrisis fall in birthrates yields an ever-shrinking inflow of young workers, placing more strain on healthcare and retirement systems.

worsening demographics could make this a second consecutive “lost decade” for global economic growth.

The Institute for Health Metrics and Evaluation found little evidence that pronatalist policies lead to sustained rebounds in fertility. A woman may get pregnant sooner to capture a baby bonus, researchers say, but likely won’t have more kids over the course of her lifetime.

As more countries confront stagnant population, immigration between them is a zero-sum gam

Historically, host countries have sought skilled migrants who enter through formal, legal channels, but recent inflows have been predominantly unskilled migrants often entering illegally and claiming asylum.

High levels of immigration have also historically aroused political resistance,

Many of the leaders keenest to raise birthrates are most resistant to immigratio

As birthrates fall, more regions and communities experience depopulation, with consequences ranging from closed schools to stagnant property values. Less selective colleges will soon struggle to fill classrooms because of the plunge in birthrates that began in 2007, said Fernández-Villaverde. Vance said rural hospitals can’t stay open because of the falling local population.

An economy with fewer children will struggle to finance pensions and healthcare for growing ranks of elderly. South Korea’s national pension fund, one of the world’s largest, is on track to be depleted by 2055

There’s been little public pressure to act, said Sok Chul Hong, an economist at Seoul National University. “The elderly are not very interested in pension reform, and the youth are apathetic towards politics,” he said. “It is truly an ironic situation.”

Linker’s description of Bushnell’s options and actions is measured and not without some respect:

Damon hops off the bus at the same point I do: Bushnell displayed a tremendous amount of courage, yes. But this was mated to an absolute moral certainty.

Every society needs both, because that is how we conserve our achievements while still working toward a more perfect order.

[Bushnell’s] choice of that word to describe Israel means he followed the “anti-colonial left” in viewing the interminable conflict in and around the Jewish state through the lens of Western imperialism across the “global south.” Viewed in this way, Israelis are rapacious oppressors, exploiters, unjustly stealing from the Palestinians, occupying their land, not just in the territories of the West Bank that are occupied under international law but likely in its entirety. That’s certainly how Hamas views the situation, with an added overlay of Islamist theofascism.

What would it be like, I wonder, to live in a world so morally simple, so neat and tidy, so devoid of tragic clashes, so orderly, with its heroes and villains, its Children of Light and its Children of Darkness? I really wouldn’t know. Because the world I inhabit is one permeated by ambiguity and people with mixed motives who are often (usually?) torn between competing moral considerations and imperatives, not a world divided between the absolutely good and the absolutely evil. The line between good and evil doesn’t run between East and West, or North and South, or white and black, or Israel and Palestine. It runs right through every human heart. Or at least most hearts.

This is where liberalism and conservatism meet, in the most elemental sense. The conservative impulse is to be suspicious of change because you are aware that things can always get worse, that systems are often too complex to be understood, that tail risk rules the world. The liberal impulse is to believe that agency is precious, that the world can be improved, that progress is both possible and desirable.

Linker notes that Bushnell referred to Israelis as “colonizers”:

Every governing system needs both, because that is how we channel passions out of the street and into political institutions.

And every person needs both, because that is how we avoid the epistemic certainty that can drive us to extremes of exuberance or despair.

The war in Gaza is a textbook example of the dangers of epistemic certainty, because it is too complicated, freighted with too much history, and too full of horrors to fit neatly on one side of the ledger or the other.

The 10/7 attack was an act of unconstrained barbarism that made it impossible for Israel to coexist with Hamas. Or at least: I am not aware of any proposed remedy that would have made coexistence possible without Israel becoming a fully militarized, illiberal state.

The Israeli response has at times violated the rules of war—sometimes of its own volition and sometimes because Hamas’s strategy has been to position assets in such a manner as to result in the deaths of as many Palestinian civilians as possible.

The suffering of the Palestinian people is real and of a magnitude that is almost impossible to comprehend.

And yet, the war continues because Hamas has no interest in a ceasefire. “We are not interested in engaging with what’s been floated, because it does not fulfill our demands,” one Hamas official told the media yesterday.

The world is messy. Life is messy. Often in ways which break the human heart. The project of liberal society, which requires equal measures of liberalism and conservatism, is to manage this messiness as well as possible.

Everywhere, new investment in green energy generation is being propelled by general concern for the climate, shifting corporate and household demand, the plunging prices for solar and batteries triggered by Chinese policy, and a combination of national and regional interventions

How different would we expect this data to look without the IRA?

The most useful overview of these modeling efforts that I have been able to find is by Bistline et al “Power sector impacts of the Inflation Reduction Act of 2022” in Environmental Research Letters November 2023. If anyone has a better source, please let me know.

The top panel shows the historical trajectory of US generating capacity from 1980 to 2021. The second half of the graphic shows how 11 different models predict that the US electricity system might be expected to develop up to 2035, with and without IRA.

all the models expect the trends of the 2010s to continue through to the 2030s which means that solar, wind and battery storage dominate America’s energy future. Even without the IRA, the low carbon share of electricity generation will likely rise to 50-55% by 2035. Bidenomics bumps that to 70-80 percent.

The question is: “How does the renewable surge of 2022-2024, compare to the model-based expectations, with and without the IRA?”

The answer is either, “so so”, or, more charitably, it is “too early to tell”. In broad terms the current rate of expansion is slightly above the rate the models predict without the provision of additional Bidenomics incentives. But what is also clear is that the current rate of expansion, is far short of the long-run pace that should be expected from the IRA

At this point, defenders of the IRA interject that the IRA has only just come into effect. Cash from the IRA is only beginning to flow. And in an environment of higher costs for renewable energy equipment and higher interest rates, cash matters.

As Yakov Feygin put it: “Maybe the pithiest way to put it is that there are pre-IRA trends and outside IRA trends, but IRA has served to rapidly compress the timeframes for installation in a lot of technologies. So five years has turned into two, for example.”

So, to judge the impact of the IRA to date, the real question is not what has been built in 2022 and 2023, but what is in the pipeline.

Advised by JP Morgan, sophisticated global players like Ørsted are optimizing their use of both the production and investment tax credits offered by the IRA to launch large new renewable schemes. Of course, correlation is not the same as causation

Where the IRA is perhaps doing its most important work may be in incentivizing the middle bracket of projects where green momentum is less certain.

According to Utility Drive: “The 10 largest U.S. developers plan to build 110,364 MW of new wind and solar projects over the next five years, according to S&P Global Market Intelligence, but the majority of these projects remain in early stages of development. Just 15% of planned wind and solar projects are under construction, and 13% are considered to be in advanced stages of development, … ”

The states that I have highlighted in red stand out either for their unusually low existing level of renewable power capacity or their lack of current momentum.

Along with Texas, the pipelines for the PJM, MISO and Southeast regions (which includes Florida) look particularly healthy.

The relatively modest California numbers should not be a surprise. As Yakov Feygin and others pointed out, what is needed in California is not more raw generating capacity, but more battery storage. And that is what we are seeing in the data.

The numbers would be even larger if it were not for the truly surreal logjam in California’s system for authorizing interconnections. According to Hamilton/Brookings data the volume of hybrid solar and batter capacity in the queue for approval is 6.5 times the capacity currently operating in the state. In other words there is an entire energy transition waiting to happen when the overloaded managerial processes of the system catch up

Texas’s less bureaucratic system seems to be one of its key advantages in the extremely rapid roll-out of solar.

though it may be true that globally speaking the United States as a whole is a laggard in renewable energy development,

If California (with an economy roughly comparable to that of Germany at current exchange rates) and Texas (with an economy roughly the size of Italy’s) were countries, they would be #3 and #5 in the world in solar capacity per capita.

the obvious question is, which are the laggards in the US energy system.

So there is a lot to get excited about, at, what we are learning to call, the “meso”-level of the economy (more on this in a future post).

What the state-level data reveal is that there are a significant number of large states in the USA where solar and wind energy have barely made any impact. Pennsylvania, for instance

The relative levels of sunshine between US states is irrelevant. As the global solar atlas shows, the entire United States has far better solar potential than North West Europe. If you can grow corn and tobbaco, you can do utility-scale solar. The fact that Arizona is not a solar giant is mind boggling.

Texas is both big and truly remarkable. California already is a world leader in renewable energy. Meanwhile, the majority of the US electricity system presents a very different picture. There is a huge distance to be traveled and the pace of solar build-out is unremarkable.

This is where national level incentives like the IRA must prove themselves

And these local battles in America matter. Given the extremely high per capita energy consumption in the USA, greening state-level energy systems is significant at the global level. It does not compare to the super-sized levels of emissions in China, but it matters.

Indonesia’s total installed electricity generating capacity is rated at 81 GW. As far as immediate impact on the global carbon balance is concerned, cleaning up the power systems of Pennsylvania and Illinois would make an even bigger impact.

A key test of Biden-era climate and industrial policy will be whether it can untie the local political economy of fossil fuels, which, across many regions of the United States still stands in the way of a green energy transition that now has all the force of economics and technological advantage on its side.

The Israeli military relies on reservist soldiers, some of whom have described growing exhaustion as Israel manages conflicts for months on end on multiple fronts, including the border with Lebanon and in the West Bank. An end to fighting in Gaza would give Israeli forces a respite that analysts say is needed, especially if fighting with Hezbollah escalates further.

Israel Ziv, a retired Israeli general and veteran of multiple wars, said tensions between the Israeli military and security establishment and Netanyahu are at a record high.“The IDF feels and the security echelon feels that we exhausted the purpose of the war. We reached the maximum tactical peak that we can achieve,” he said. “As long as Rafah was there, they could say finish the job. OK it’s finished now.”

Netanyahu has rejected a series of proposals for possible alternatives to Hamas, including an American plan to bring in the Palestinian Authority and Arab calls for a Palestinian unity government that would include Hamas. Some military analysts and former Israeli officials have questioned whether installing a new government in Gaza was ever possible, given that Hamas has managed to survive the Israeli military assault.

“We need to make a decision,” said Ziv. “Even a bad decision, that’s OK. Let’s say [we] occupy Gaza in the next few years because we need to clear up the last few terrorists. OK, it’s a bad decision, but it’s a decision. The military needs to know.”

The dispute between Netanyahu and the military centers in part on how officials define a defeat of Hamas. An Israeli military official said the army considers a battalion “dismantled” not when all its fighters are killed, but when its command structure and ability to carry out organized attacks are eliminated. 

Military analysts say that Hamas’s militia forces are likely to survive the Israeli military operation even in Rafah, in part because the Israeli army’s approach leaves many lower-ranking Hamas fighters in place. Hamas’s top leadership in the enclave, including its leader, Yahya Sinwar, have also eluded Israeli forces throughout the war.

“Hamas is preserving its forces in Rafah rather than engaging the Israel Defense Forces, likely because Hamas does not believe Israel’s Rafah operation will be decisive,” said an assessment this week from the Institute for the Study of War and the American Enterprise Institute’s Critical Threats Project.

In Greece, an unlikely economic star since the pandemic, as many as 44% of all jobs are connected to tourism. 

Can Europe’s emerging “museum economy” support sustained wealth creation and the expansive welfare systems Europeans have become accustomed to since the end of World War II? And what happens if the dollar falls and the tourists leave?

Rent and other living expenses are rising in hot spots, making it harder for many locals to make ends meet. A heightened focus on tourism, which turns a quick profit but remains a low-productivity activity, tethers these economies to a highly cyclical industry

It also risks keeping workers and capital from more profitable areas, like tech and high-end manufacturing. 

some economists, residents and politicians are concerned about the boom’s long-term implications.

“It is literally, for Americans right now, the place to go,”

The strong dollar—and a powerful post-Covid recovery—has empowered millions of Americans who would have vacationed in the U.S. before the pandemic. They are now finding they can afford a lavish European holiday.

One reason is the brutal sovereign debt crisis that hit the continent’s south especially hard just over a decade ago. Unable to stimulate demand with public spending or to energize exports by devaluing their currency—the euro, which is shared by 20 states—those countries could only boost their competitiveness by lowering wages.

“Your dollar goes a lot further,” Cross said over coffee in the lobby of her five-star hotel. “You don’t feel you’re scrounging as much.”

Tourism now generates one-fifth of economic output in Lisbon and supports one in four jobs. That boom has reverberated far beyond the capital.

Portugal’s gross domestic product grew nearly 8% between 2019 and 2024, compared with less than 1% for Germany,

The government recorded a rare 1.2% of GDP budget surplus last year, and its debt-to-GDP ratio is expected to fall to 95% this year, the lowest since 2009

Portugal’s population is growing again after years of decline, thanks in part to an influx of migrant workers and to various tax incentives and investor visas that have attracted high-income workers. 

Moedas, Lisbon’s mayor, says there’s room for further growth. For a city that doubles in size to around one million every day, including commuters, only around 35,000 are tourists, he said. “We are very far from a situation of so-called overtourism.”

The trend is part of a global readjustment following the Covid-19 lockdowns. Spending on travel and hospitality worldwide grew roughly seven times faster than the global economy over the past two years, according to Oxford Economics. That pattern is expected to continue for the next decade, though to a lesser degree.

Europe, especially southern Europe, has benefited more than many other regions. Though it is home to just 5% of the world’s population, the European Union received around one-third of all international tourist dollars—more than half a trillion dollars—last year. This is up roughly threefold over two decades, and compares with about $150 billion for the U.S., where tourism has been slower to rebound.

In Portugal, a country of 10 million that juts out into the North Atlantic from Spain, Americans recently surpassed Spaniards as the biggest group of foreign tourists. 

This and a real estate collapse that left hundreds of thousands of workers suddenly available made the region’s tourist industry ultracompetitive, much cheaper than Caribbean beach destinations and on a par with Latin American destinations like Mexico. 

Once an owner of TAP, Neeleman increased the number of direct flights to the U.S. eightfold between 2015 and 2020, adding major hubs such as JFK and Boston Logan, betting that would open up an untapped market. As bookings soared, other U.S. airlines followed. 

“It was actually comical, because I went from knowing no one who had been to Portugal to everyone telling me they were going to Portugal,”

For Gonçalo Hall, a 36-year-old tech worker, the influx of foreign cash that has transformed Lisbon has been overwhelmingly beneficial for the city. When he lived in the capital 15 years ago, he wouldn’t walk in the historic downtown after 8 p.m. It was “full of homeless people, not safe. Lots of empty and abandoned buildings,” he said. 

“The quality of life in Lisbon doesn’t match the prices. Even expats are leaving,” said Hall, who moved to the Atlantic island of Madeira during the pandemic and continues to work remotely.  

The average Portuguese employee earns around €1,000 a month after tax, or around $1,100 a month, and only 2% earn more than €2,000. A one-bedroom apartment in Lisbon can easily cost more than €500,000 to buy, or over €1,200 a month to rent. Rents in nearby cities are also climbing as people leave the capital, squeezed out as lucrative short-term rentals transform the housing market. 

Jessica Ribeiro, a 35-year-old sociologist, pays around €490 a month for an apartment that she shares with her ex-husband in a town close to Lisbon. Neither can afford to leave. Both make a little more than the minimum wage of €820 a month, and soaring rents mean it is impossible to find an apartment in the neighborhood for less than €700, Ribeiro said. 

“The harm that tourism has brought is infinitely bigger than the benefits,” Ribeiro said. “It sends people away from their place of work, making their lives much harder.” 

A frequent complaint from residents and housing advocates is that some of the boom’s biggest winners are American companies, from Airbnb to Uber, which often pay little tax in the places where they do most of their business.

Lisbon is cracking down on Airbnbs and increasing taxes on tourists, doubling the nightly city tax from €2 to €4, which should raise €80 million a year. Airbnb has paid Lisbon and Porto, Portugal’s two biggest cities, more than €63 million after entering into voluntary tax collection agreements with local officials. Moedas said he is considering “a bit more regulation” of the city’s many Ubers, whose drivers he said don’t always respect traffic rules. 

Around nine in 10 Airbnb hosts in Portugal rent their family home and almost half say the extra income helps them afford to stay in their homes, according to a spokesperson for the company. “Guests using our platform account for just 10% of total nights booked in Portugal, and we follow the rules and only allow listings that are registered with local authorities,”

Higher rents are forcing many businesses and cultural and social spaces catering to locals to close, according to Silva. “This is not an economy that is serving the needs of the majority of people,” she said.

Signs of discontent are bubbling up across the region. Tens of thousands of local residents marched in Spain’s Balearic and Canary islands in recent months to protest mass tourism and overcrowding. On Mallorca, activists have put up fake signs at some popular beaches warning in English of the risk of falling rocks or dangerous jellyfish to deter tourists, according to social-media posts.

Serving foreigners is difficult to scale up and is more exposed to economic headwinds. Like the discovery of oil, southern Europe’s new focus on tourism can crowd out higher-value activities by hogging capital and workers, a phenomenon some economists have dubbed the “beach disease.”

“Portugal isn’t an industrialized country. It’s just the playground of the EU,” said Priscila Valadão, a 43-year-old administrative assistant in Lisbon. She makes €905 a month and rents a room from a friend for €250 a month. “The type of jobs being offered…are restricted to a type of activity that really doesn’t enrich the country,”

For Europe’s policymakers, having people open hotels or restaurants is easier than incentivizing them to build up advanced manufacturing, which is capital intensive and takes a long time to pay off, said Marcos Carias, an economist with French insurer Coface. 

“Tourism is the easy way out,” Carias said. “What is the incentive to look for ingenuity and go through the pain of creating new economic value if tourism works as a short-term solution?”

Proponents say tourism attracts capital to poor regions, and can serve as a base to build a more diversified economy. Lisbon’s Moedas said he is trying to leverage the influx of foreign visitors to build up sectors such as culture and technology, including by developing conferences and cultural events. 

“Some extreme left parties basically say we need to reduce tourism,” Moedas said, but that is the wrong approach. “What we have to do is to increase other sectors like innovation, technology…. We should still invest in tourism, but we should go up the ladder.”

While Dias, the hotel owner, is diversifying into nightlife, he refuses to envisage a future where the sector would have to rely heavily on visitors from elsewhere.

More than one-third of highly qualified Portuguese students leave the country after graduating,

Even higher-paid technology workers have started decamping to cheaper places. 

Tiago Araújo, chief executive of tourism tech startup HiJiffy, has held on to his employees but says many of them have been moving out of Lisbon. The trend, which started during Covid, is now being primarily driven by the housing crisis.

In Athens, Mayor Haris Doukas says he is working on extending the tourist season, increasing the average length of stay and promoting specific types of tourism, such as organizing conferences and business meetings, to attract visitors with higher purchasing power. He’s also called for new taxes to help the city accommodate the millions of additional tourists thronging to the ancient capital.

If Americans stop coming to Lisbon, he said, “I don’t think we can charge this kind of [price] because we will have to go to Europeans, and the Europeans, they don’t have money.”

Dr. Shi’s group was fascinated by how coronaviruses jump from species to species. To find viruses, they took samples from bats and other animals, as well as from sick people living near animals carrying these viruses or associated with the wildlife trade. Much of this work was conducted in partnership with the EcoHealth Alliance, a U.S.-based scientific organization that, since 2002, has been awarded over $80 million in federal funding to research the risks of emerging infectious diseases.

Their research showed that the viruses most similar to SARS‑CoV‑2, the virus that caused the pandemic, circulate in bats that live roughly 1,000 miles away from Wuhan. Scientists from Dr. Shi’s team traveled repeatedly to Yunnan province to collect these viruses and had expanded their search to Southeast Asia. Bats in other parts of China have not been found to carry viruses that are as closely related to SARS-CoV-2.

When the Covid-19 outbreak was detected, Dr. Shi initially wondered if the novel coronavirus had come from her laboratory, saying she had never expected such an outbreak to occur in Wuhan.

The SARS‑CoV‑2 virus is exceptionally contagious and can jump from species to species like wildfire. Yet it left no known trace of infection at its source or anywhere along what would have been a thousand-mile journey before emerging in Wuhan.

The year before the outbreak, the Wuhan institute, working with U.S. partners, had proposed creating viruses with SARS‑CoV‑2’s defining feature

The laboratory pursued risky research that resulted in viruses becoming more infectious: Coronaviruses were grown from samples from infected animals and genetically reconstructed and recombined to create new viruses unknown in nature. These new viruses were passed through cells from bats, pigs, primates and humans and were used to infect civets and humanized mice (mice modified with human genes). In essence, this process forced these viruses to adapt to new host species, and the viruses with mutations that allowed them to thrive emerged as victors.

Worse still, as the pandemic raged, their American collaborators failed to publicly reveal the existence of the Defuse proposal. The president of EcoHealth, Peter Daszak, recently admitted to Congress that he doesn’t know about virus samples collected by the Wuhan institute after 2015 and never asked the lab’s scientists if they had started the work described in Defuse.

By 2019, Dr. Shi’s group had published a database describing more than 22,000 collected wildlife samples. But external access was shut off in the fall of 2019, and the database was not shared with American collaborators even after the pandemic started, when such a rich virus collection would have been most useful in tracking the origin of SARS‑CoV‑2. It remains unclear whether the Wuhan institute possessed a precursor of the pandemic virus.

In 2021, The Intercept published a leaked 2018 grant proposal for a research project named Defuse, which had been written as a collaboration between EcoHealth, the Wuhan institute and Ralph Baric at the University of North Carolina, who had been on the cutting edge of coronavirus research for years. The proposal described plans to create viruses strikingly similar to SARS‑CoV‑2.

Coronaviruses bear their name because their surface is studded with protein spikes, like a spiky crown, which they use to enter animal cells. The Defuse project proposed to search for and create SARS-like viruses carrying spikes with a unique feature: a furin cleavage site — the same feature that enhances SARS‑CoV‑2’s infectiousness in humans, making it capable of causing a pandemic. Defuse was never funded by the United States.

owever, in his testimony on Monday, Dr. Fauci explained that the Wuhan institute would not need to rely on U.S. funding to pursue research independently.

While it’s possible that the furin cleavage site could have evolved naturally (as seen in some distantly related coronaviruses), out of the hundreds of SARS-like viruses cataloged by scientists, SARS‑CoV‑2 is the only one known to possess a furin cleavage site in its spike. And the genetic data suggest that the virus had only recently gained the furin cleavage site before it started the pandemic.

Ultimately, a never-before-seen SARS-like virus with a newly introduced furin cleavage site, matching the description in the Wuhan institute’s Defuse proposal, caused an outbreak in Wuhan less than two years after the proposal was drafted.

When the Wuhan scientists published their seminal paper about Covid-19 as the pandemic roared to life in 2020, they did not mention the virus’s furin cleavage site — a feature they should have been on the lookout for, according to their own grant proposal, and a feature quickly recognized by other scientists.

At the Wuhan Institute of Virology, a team of scientists had been hunting for SARS-like viruses for over a decade, led by Shi Zhengl

In May, citing failures in EcoHealth’s monitoring of risky experiments conducted at the Wuhan lab, the Biden administration suspended all federal funding for the organization and Dr. Daszak, and initiated proceedings to bar them from receiving future grants. In his testimony on Monday, Dr. Fauci said that he supported the decision to suspend and bar EcoHealth.

Separately, Dr. Baric described the competitive dynamic between his research group and the institute when he told Congress that the Wuhan scientists would probably not have shared their most interesting newly discovered viruses with him. Documents and email correspondence between the institute and Dr. Baric are still being withheld from the public while their release is fiercely contested in litigation.

In the end, American partners very likely knew of only a fraction of the research done in Wuhan. According to U.S. intelligence sources, some of the institute’s virus research was classified or conducted with or on behalf of the Chinese military.

In the congressional hearing on Monday, Dr. Fauci repeatedly acknowledged the lack of visibility into experiments conducted at the Wuhan institute, saying, “None of us can know everything that’s going on in China, or in Wuhan, or what have you. And that’s the reason why — I say today, and I’ve said at the T.I.,” referring to his transcribed interview with the subcommittee, “I keep an open mind as to what the origin is.”

The Wuhan lab pursued this type of work under low biosafety conditions that could not have contained an airborne virus as infectious as SARS‑CoV‑2.

Labs working with live viruses generally operate at one of four biosafety levels (known in ascending order of stringency as BSL-1, 2, 3 and 4) that describe the work practices that are considered sufficiently safe depending on the characteristics of each pathogen. The Wuhan institute’s scientists worked with SARS-like viruses under inappropriately low biosafety conditions.

​​Biosafety levels are not internationally standardized, and some countries use more permissive protocols than others.

In one experiment, Dr. Shi’s group genetically engineered an unexpectedly deadly SARS-like virus (not closely related to SARS‑CoV‑2) that exhibited a 10,000-fold increase in the quantity of virus in the lungs and brains of humanized mice. Wuhan institute scientists handled these live viruses at low biosafety levels, including BSL-2.

Even the much more stringent containment at BSL-3 cannot fully prevent SARS‑CoV‑2 from escaping. Two years into the pandemic, the virus infected a scientist in a BSL-3 laboratory in Taiwan, which was, at the time, a zero-Covid country. The scientist had been vaccinated and was tested only after losing the sense of smell. By then, more than 100 close contacts had been exposed. Human error is a source of exposure even at the highest biosafety levels, and the risks are much greater for scientists working with infectious pathogens at low biosafety.

An early draft of the Defuse proposal stated that the Wuhan lab would do their virus work at BSL-2 to make it “highly cost-effective.” Dr. Baric added a note to the draft highlighting the importance of using BSL-3 to contain SARS-like viruses that could infect human cells, writing that “U.S. researchers will likely freak out.”

Years later, after SARS‑CoV‑2 had killed millions, Dr. Baric wrote to Dr. Daszak: “I have no doubt that they followed state determined rules and did the work under BSL-2. Yes China has the right to set their own policy. You believe this was appropriate containment if you want but don’t expect me to believe it. Moreover, don’t insult my intelligence by trying to feed me this load of BS.”

SARS‑CoV‑2 is a stealthy virus that transmits effectively through the air, causes a range of symptoms similar to those of other common respiratory diseases and can be spread by infected people before symptoms even appear. If the virus had escaped from a BSL-2 laboratory in 2019, the leak most likely would have gone undetected until too late.

One alarming detail — leaked to The Wall Street Journal and confirmed by current and former U.S. government officials — is that scientists on Dr. Shi’s team fell ill with Covid-like symptoms in the fall of 2019. One of the scientists had been named in the Defuse proposal as the person in charge of virus discovery work. The scientists denied having been sick.

The hypothesis that Covid-19 came from an animal at the Huanan Seafood Market in Wuhan is not supported by strong evidence.

In December 2019, Chinese investigators assumed the outbreak had started at a centrally located market frequented by thousands of visitors daily. This bias in their search for early cases meant that cases unlinked to or located far away from the market would very likely have been missed

To make things worse, the Chinese authorities blocked the reporting of early cases not linked to the market and, claiming biosafety precautions, ordered the destruction of patient samples on January 3, 2020, making it nearly impossible to see the complete picture of the earliest Covid-19 cases. Information about dozens of early cases from November and December 2019 remains inaccessible.

A pair of papers published in Science in 2022 made the best case for SARS‑CoV‑2 having emerged naturally from human-animal contact at the Wuhan market by focusing on a map of the early cases and asserting that the virus had jumped from animals into humans twice at the market in 2019

More recently, the two papers have been countered by other virologists and scientists who convincingly demonstrate that the available market evidence does not distinguish between a human superspreader event and a natural spillover at the market.

Furthermore, the existing genetic and early case data show that all known Covid-19 cases probably stem from a single introduction of SARS‑CoV‑2 into people, and the outbreak at the Wuhan market probably happened after the virus had already been circulating in humans.

Not a single infected animal has ever been confirmed at the market or in its supply chain. Without good evidence that the pandemic started at the Huanan Seafood Market, the fact that the virus emerged in Wuhan points squarely at its unique SARS-like virus laboratory.

With today’s technology, scientists can detect how respiratory viruses — including SARS, MERS and the flu — circulate in animals while making repeated attempts to jump across species. Thankfully, these variants usually fail to transmit well after crossing over to a new species and tend to die off after a small number of infections

investigators have not reported finding any animals infected with SARS‑CoV‑2 that had not been infected by humans. Yet, infected animal sources and other connective pieces of evidence were found for the earlier SARS and MERS outbreaks as quickly as within a few days, despite the less advanced viral forensic technologies of two decades ago.

Even though Wuhan is the home base of virus hunters with world-leading expertise in tracking novel SARS-like viruses, investigators have either failed to collect or report key evidence that would be expected if Covid-19 emerged from the wildlife trade. For example, investigators have not determined that the earliest known cases had exposure to intermediate host animals before falling ill.

No antibody evidence shows that animal traders in Wuhan are regularly exposed to SARS-like viruses, as would be expected in such situations.

In previous outbreaks of coronaviruses, scientists were able to demonstrate natural origin by collecting multiple pieces of evidence linking infected humans to infected animals

In contrast, virologists and other scientists agree that SARS‑CoV‑2 required little to no adaptation to spread rapidly in humans and other animals. The virus appears to have succeeded in causing a pandemic upon its only detected jump into humans.

it was a SARS-like coronavirus with a unique furin cleavage site that emerged in Wuhan, less than two years after scientists, sometimes working under inadequate biosafety conditions, proposed collecting and creating viruses of that same design.

a laboratory accident is the most parsimonious explanation of how the pandemic began.

Given what we now know, investigators should follow their strongest leads and subpoena all exchanges between the Wuhan scientists and their international partners, including unpublished research proposals, manuscripts, data and commercial orders. In particular, exchanges from 2018 and 2019 — the critical two years before the emergence of Covid-19 — are very likely to be illuminating (and require no cooperation from the Chinese government to acquire), yet they remain beyond the public’s view more than four years after the pandemic began.

it is undeniable that U.S. federal funding helped to build an unprecedented collection of SARS-like viruses at the Wuhan institute, as well as contributing to research that enhanced them.

Advocates and funders of the institute’s research, including Dr. Fauci, should cooperate with the investigation to help identify and close the loopholes that allowed such dangerous work to occur. The world must not continue to bear the intolerable risks of research with the potential to cause pandemics.

A successful investigation of the pandemic’s root cause would have the power to break a decades-long scientific impasse on pathogen research safety, determining how governments will spend billions of dollars to prevent future pandemics. A credible investigation would also deter future acts of negligence and deceit by demonstrating that it is indeed possible to be held accountable for causing a viral pandemic

Last but not least, people of all nations need to see their leaders — and especially, their scientists — heading the charge to find out what caused this world-shaking event. Restoring public trust in science and government leadership requires it.

Out of the 7,000 rooms in the Village, 2,500 have been supplied mobile air conditioning units at the teams’ requests, a Paris 2024 spokesman said

Keeping cool at all times is that much more important given the erratic schedules that some of the athletes here are facing, said Carroll, the Australian Olympic committee executive. Since many athletes’ events are at night, they’ll need to sleep during the hottest part of the day. So the decision to pay for air conditioners was a no-brainer.

But not everyone is all-in on A/C. Germany’s Olympic sports federation will have one of the larger contingents in the village with around 350 athletes. That includes 6-foot-7½-inch decathlon medal favorite Leo Neugebauer, who recently won the NCAA title competing for the Texas Longhorns in Austin, where air conditioning isn’t merely a suggestion—it’s a way of life.

When Germany asked its individual sport federations if they wanted to order air conditioning units for the athletes’ village, demand for frigid air was lukewarm, according to Olympic committee spokesman Michael Schirp.

“A total of 11 AC have been ordered. Eleven,” he wrote, adding an emoji of a face wearing sunglasses.