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a reduction in REM sleep (or less “dreaming”) influences our ability to understand complex emotions in daily life – an essential feature of human social functioning

Dreams seem to help us process emotions by encoding and constructing memories of them. What we see and experience in our dreams might not necessarily be real, but the emotions attached to these experiences certainly are. Our dream stories essentially try to strip the emotion out of a certain experience by creating a memory of it. This way, the emotion itself is no longer active.  This mechanism fulfils an important role because when we don’t process our emotions, especially negative ones, this increases personal worry and anxiety.

In short, dreams help regulate traffic on that fragile bridge which connects our experiences with our emotions and memories.

it is not clear whether the rise of post-war tower dwelling is a definite improvement on the modern city sprawl. Tall buildings (with the exception of glassed-office buildings and landmarks) are often found in sad scenes.

In recent years, the new mayor of the Colombian capital Bogota, Enrique Penalosa, has cancelled highways projects and poured the money instead into cycle lanes, parks and open spaces for locals – undoing decades of car-centric planning that had made the streets a no-go area for the capital’s children. On the day in February 2000 when Penalosa banned cars from the street for 24 hours, hospital admissions fell by a third, air pollution levels dropped and residents said it made them feel more optimistic about living in the city.

are the technologies we are designing really helping its users to be happy? Take the simple example of a web map. It usually gives us the shortest walking direction to destination. But what if it would give us the small street, full of trees, parallel to the shortest path, which would make us happier? As more and more of us share these city streets, what will keep us happy as they become more crowded?

the share of the world’s population living in cities has surpassed 50%. By 2025, we will see another 1.2 billion city residents. With more and more of us moving to urban centres, quality of life becomes ever-more important.

"As you all know, I went through a really fun time the last 15 months with lots of different people investigating me too, right?"

"There is a bias," Christie insisted

all of that happened last January was, 'Oh, by the way, ... I have a private email server and all my emails were on this private server and I deleted a bunch of them, but they were only personal, and you're going to have to take my word for it cause the servers gone."

not the first time the governor suggested media bias was to blame for the fallout of the George Washington Bridge lane closure controversy.

December 2013, a month before the now infamous "time for some traffic problems in Fort Lee" email from a top Christie staffer was revealed, Christie brushed off questions about the lane closures during a Statehouse news conference

"I know you guys are obsessed with this, I'm not. I'm really not. It's not that big a deal," Christie insisted. "Just because press runs around and writes about it, both here and nationally, I know why that is and so do you, let's not pretend it's because of the gravity of the issue. It's because I am a national figure and anything like this will be written a lot about now, so let's not pretend this is some grave thing."

Christie signaled in New Hampshire he's intent on pressing Clinton, the Democratic frontrunner in the 2016 presidential race, on the attacks in Benghazi, Libya that's been a lighting rod for Clinton critics just as the governor declared during a recent trip here that he's done "apologizing" for the Bridgegate scandal

"I don't think there's been nearly enough questions asked about this," Christie said. "We need to ask a lot more questions about Benghazi. We need to get to the bottom of what happened because it does matter, madam secretary."

The front page of a newspaper and the cover of a magazine lost their dominance long ago.

Facebook executives have insisted that they intend to exert no editorial control because they leave the makeup of the news feed to the algorithm. But an algorithm is not autonomous. It is written by humans and tweaked all the time. Advertisement Continue reading the main story Advertisement Continue reading the main story

“In digital, every story becomes unbundled from each other, so if you’re not thinking of each story as living on its own, it’s tying yourself back to an analog era,” Mr. Kim said.

But news reports, like albums before them, have not been created that way. One of the services that editors bring to readers has been to use their news judgment, considering a huge range of factors, when they decide how articles fit together and where they show up. The news judgment of The New York Times is distinct from that of The New York Post, and for generations readers appreciated that distinction.

That raises some journalistic questions. The news feed algorithm works, in part, by showing people more of what they have liked in the past. Some studies have suggested that means they might not see as wide a variety of news or points of view, though others, including one by Facebook researchers, have found they still do.

Tech companies, Facebook included, are notoriously fickle with their algorithms. Publications became so dependent on Facebook in the first place because of a change in its algorithm that sent more traffic their way. Later, another change demoted articles from sites that Facebook deemed to run click-bait headlines. Then last month, Facebook decided to prioritize some posts from friends over those from publications.

When the study drew attention and controversy, there was a moment when they both could have said: "We didn't look carefully enough at this the first time. Now we can see that it doesn't meet our standards." Instead they allowed Facebook and the PR people to take the lead in responding to the controversy.

What should this reality signal to Facebook users? Is it time to pull-back? You have (almost) no rights. You have (almost) no control. You have no idea what they're doing to you or with you. You don't even know who's getting the stuff you are posting, and you're not allowed to know. Trade secret!

Are there any particular warnings here for journalists and editors in terms of their exposure on Facebook? Yeah. Facebook has all the power. You have almost none. Just keep that in mind in all your dealings with it, as an individual with family and friends, as a journalist with a story to file, and as a news organization that is "on" Facebook.

I am not in a commercial situation where I have to maximize my traffic, so I can opt out. Right now my choice is to keep my account, but use it cynically. 

does this level of experimentation indicate the prospect of a further undermining of audience-driven news priorities and traditional news values? The right way to think about it is a loss of power—for news producers and their priorities. As I said, Facebook thinks it knows better than I do what "my" 180,000 subscribers should get from me.

Facebook has "where else are they going to go?" logic now. And they have good reason for this confidence. (It's called network effects.) But "where else are they going to go?" is a long way from trust and loyalty. It is less a durable business model than a statement of power. 

I distinguished between the "thin" legitimacy that Facebook operates under and the "thick" legitimacy that the university requires to be the institution it was always supposed to be. (Both are distinct from il-legitimacy.) News organizations should learn to make this distinction more often. Normal PR exists to muddle it. Which is why you don't hand a research crisis over to university PR people.

some commentators have questioned the practice of A/B headline testing in the aftermath of this scandal—is there a clear connection? The connection to me is that both are forms of behaviourism. Behaviourism is a view of human beings in which, as Hannah Arendt said, they are reduced to the level of a conditioned and "behaving" animal—an animal that responds to these stimuli but not those. This is why a popular shorthand for Facebook's study was that users were being treated as lab rats.

Journalism is supposed to be about informing people so they can understand the world and take action when necessary. Action and behaviour are not the same thing at all. One is a conscious choice, the other a human tendency. There's a tension, then, between commercial behaviourism, which may be deeply functional in some ways for the news industry, and informing people as citizens capable of understanding their world well enough to improve it, which is the deepest purpose of journalism. A/B testing merely highlights this tension.

the forthcoming Apple Watch seems like a step toward the future Donath envisions. Users will be able to send animated smiley faces, drawings, voice snippets, and even their live heartbeats, which will be tapped out on the receiver’s wrist.

A simple but rich messaging platform—perhaps with specialized hardware—could replace the omnibus social network for most purposes. “I think we’re shifting in a weird way to one-on-one conversations on social networks and in messaging apps,” says Shani Hilton, the executive editor for news at BuzzFeed, the viral-media site. “People don’t want to perform their lives publicly in the same way that they wanted to five years ago.”

Facebook is built around a trade-off that it has asked users to make: Give us all your personal information, post all your pictures, tag all your friends, and so on, forever. In return, we’ll optimize your social life. But this output is only as good as the input. And it turns out that, when scaled up, creating this input—making yourself legible enough to the Facebook machine that your posts are deemed “relevant” and worthy of being displayed to your mom and your friends—is exhausting labor.

These new apps, then, are arguments that we can still have an Internet that is weird, and private. That we can still have social networks without the social network. And that we can still have friends on the Internet without “friending” them.

A Brief History of Information Gatekeepers 1871: Western Union controls 90 percent of U.S. telegraph traffic. 1947: 97 percent of the country’s radio stations are affiliated with one of four national networks. 1969: Viewership for the three nightly network newscasts hits an all-time high, with 50 percent of all American homes tuning in. 1997: About half of all American homes with Internet access get it through America Online. 2002: Microsoft Internet Explorer captures 97 percent of the worldwide browser market. 2014: Amazon sells 63 percent of all books bought online—and 40 percent of books overall.

For Coates, true equality means “black people in this country have the right to be as mediocre as white people,” he says. “Not that individual black people will be as excellent, or more excellent, than other white people.”

he came to see black respectability—the idea that, to succeed, African-Americans must stoically prevail against the odds and be “twice as good” as white people to get the same rights—as deeply immoral.

He is no soothsayer, telling people what to think from on high, but rather is refreshingly open about what he doesn’t know, inviting readers to learn with him. Coates is not merely an ivory-tower pontificator or a shiny Web 2.0 brand. He is a public intellectual for the digital age.

we miss the real question of why there is a systemic, historical difference in the way police treat blacks versus whites.

Another term for that road is “white supremacy.” This refers not so much to hate groups, but, as Coates defines it, a system of policies and beliefs that aims to keep African-Americans as “a peon class.”

To be “white” in this sense does not refer merely to skin color but to the degree that someone qualifies as “normal,” and thus worthy of the same rights as all Americans

The pool where all these ideas eventually arrive is a question: “How big-hearted can democracy be?” he says. “How many people can it actually include and sustain itself? That is the question I’m asking over and over again.”

it is a question of empathy. Are humans capable of forming a society where everyone can flourish?

there was the coverage of Michael Brown (or Jordan Davis, or Renisha McBride, or Eric Garner): unarmed African-Americans killed by police or others under controversial circumstances. In each case, the storyline was that these horrific encounters were caused either by genuine provocation, or by race-fueled fear or hatred. Either way, they were stories of personal failings.

When an event becomes news, there is often an implication that it is an exception—that the world is mostly working as it should and this event is newsworthy because it’s an aberration. If the race-related stories we see most often in the media are about personal bigotry, then our conception of racism is limited to the bigoted remarks or actions—racism becomes little more than uttering the n-word.

he cites research that in 1860 slaves were the largest asset in the US economy. “It is almost impossible to think of democracy, as it was formed in America, without the enslavement of African-Americans,” he says. “Not that these things were bumps in the road along the way, but that they were the road.”

a lack of historical perspective in the media’s approach to race. “Journalism privileges what’s happening now over the long reasons for things happening,” he says. “And for African-Americans, that has a particular effect.”

Even the very existence of racism is questioned: A recent study published by the Association of Psychological Science has shown that whites think they are discriminated against due to race as much if not more than blacks.

“So when you’re talking about something like institutional racism and prejudice, how do you talk about that as an objective reality?”

Coates’ strength is in connecting contemporary problems to historical scholarship. “I think if I bring anything to the table it’s the ability to synthesize all of that into something that people find emotionally moving,” he says. The irony of the reparations piece, as unoriginal as it may have been to scholars, is that it was news to many people.

Reporting on race requires simultaneously understanding multiple, contradictory worlds, with contradictory narratives. Widespread black poverty exists; so do a black middle class and a black president

Progress is key to the myth of American Exceptionalism, and the notion that America is built on slavery and on freedom are discordant ideas that threaten any simple storyline. Coates, together with others who join him, is trying to claim the frontier of a new narrative.

reading Coates is like building a worldview, piece by piece, on an area of contemporary life that’s otherwise difficult to grasp.

“To come and tell someone may not be as effective in convincing them as allowing them to learn on their own. If you believe you come to a conclusion on your own, you’re more likely to agree.”

It’s brave to bare yourself intellectually on the Web, and to acknowledge mistakes, especially when the capital that public intellectuals appear to have is their ability to be “right.”

Coates is equally demanding of his followers. Online he is blunt, and willing to call people out. He cares enough to be rigorous

despite being a master of online engagement, Coates insists he does not write for others, an idea he explained in a recent post: “I have long believed that the best part of writing is not the communication of knowledge to other people, but the acquisition and synthesizing of knowledge for oneself. The best thing I can say about the reparations piece is that I now understand.”

To him, it’s an open question whether or not America will ever be capable of fostering true equality. “How big-hearted can democracy be? It points to a very ugly answer: maybe not that big-hearted at all. That in fact America is not exceptional. That it’s just like every other country. That it passes its democracy and it passes all these allegedly big-hearted programs [the New Deal, the G.I. Bill] but still excludes other people,

In a 2010 post about antebellum America, Coates mentioned feminist and abolitionist Angelina Grimke. “Suffice to say that much like Abe Lincoln, and Ulysses Grant, Angelina Grimke was a Walker,” he wrote. “What was the Walker reference?” Rosemartian asked in the comments section. “Just someone who spends their life evolving, or, walking,” Coates replied. “Grant and Lincoln fit in there for me. Malcolm X was another Walker. Walkers tend to be sometimes—even often—wrong. But they are rarely bigots, in the sense of nakedly clinging to ignorance.”

In five different experiments involving several hundred undergraduates and 100 adults recruited from online communities, the researchers found higher levels of both narcissism and entitlement among those of higher income and social class.

when asked to visually depict themselves as circles, with size indicating relative importance, richer people picked larger circles for themselves and smaller ones for others. Another experiment found that they also looked in the mirror more frequently.

The wealthier participants were also more likely to agree with statements like “I honestly feel I’m just more deserving than other people

But which came first — did gaining wealth increase self-aggrandizement? Were self-infatuated people more likely to seek and then gain riches

To explore that relationship further, the researchers also asked the college students in one experiment to report the educational attainment and annual income of their parents. Those with more highly educated and wealthier parents remained higher in their self-reported entitlement and narcissistic characteristics. “That would suggest that it’s not just [that] people who feel entitled are more likely to become wealthy,” says Piff. Wealth, in other words, may breed narcissistic tendencies — and wealthy people justify their excess by convincing themselves that they are more deserving of it

“The strength of the study is that it uses multiple methods for measuring narcissism and entitlement and social class and multiple populations, and that can really increase our confidence in the results,”

“This paper should not be read as saying that narcissists are more successful because we know from lots of other studies that that’s not true.

“entitlement is a facet of narcissism,” says Twenge. “And [it’s the] one most associated with high social class. It’s the idea that you deserve special treatment and that things will come to you without working hard.”

Manipulating the sense of entitlement, however, may provide a way to influence narcissism. In the final experiment in the paper, the researchers found that having participants who listed three benefits of seeing others as equals eliminated class differences in narcissism, while simply listing three daily activities did not.

In the meantime, the connection between wealth and entitlement could have troubling social implications. “You have this bifurcation of rich and poor,” says Levine. “The rich are increasingly entitled, and since they set the cultural tone for advertising and all those kinds of things, I think there’s a pervasive sense of entitlement.”

That could perpetuate a deepening lack of empathy that could fuel narcissistic tendencies. “You could imagine negative attitudes toward wealth redistribution as a result of entitlement,” says Piff. “The more severe inequality becomes, the more entitled people may feel and the less likely to share those resources they become.”

I can no longer wait in a grocery store line, or linger for a traffic light, or even pause long enough to let a bagel pop from the toaster, without reflexively reaching for my smartphone.

. You see it in our politics, with fear-mongering slogans replacing anything that requires sustained thought. And the collapse of a fact-based democracy, where, for example, 60 percent of Trump supporters believe Obama was born in another country, has to be a byproduct of the pick-and-choose news from the buffet line of our screens.

I’ve found a pair of antidotes, very old school, for my shrinking attention span.

. You plant something in the cold, wet soil of the fall

The second is deep reading

Maybe you heard that story as encouragement to think of the big picture, but to the psychologist in you the important moral is that any action has to be thought of at multiple levels if you are going to carry it out successfully. The third builder might have the most inspiring view of their day-job, but nobody can build a cathedral without figuring out how to successfully put one brick on top of another like the first builder.

As we move through our days our attention shifts between these levels – from our goals and ambitions, to plans and strategies, and to the lowest levels, our concrete actions. When things are going well, often in familiar situations, we keep our attention on what we want and how we do it seems to take care of itself. If you’re a skilled driver then you manage the gears, indicators and wheel automatically, and your attention is probably caught up in the less routine business of navigating the traffic or talking to your passengers. When things are less routine we have to shift our attention to the details of what we’re doing, taking our minds off the bigger picture for a moment.

The way our attention moves up and down the hierarchy of action is what allows us to carry out complex behaviours, stitching together a coherent plan over multiple moments, in multiple places or requiring multiple actions.

The Doorway Effect occurs when our attention moves between levels, and it reflects the reliance of our memories – even memories for what we were about to do – on the environment we’re in.

Imagine that we’re going upstairs to get our keys and forget that it is the keys we came for as soon as we enter the bedroom. Psychologically, what has happened is that the plan (“Keys!”) has been forgotten even in the middle of implementing a necessary part of the strategy (“Go to bedroom!”). Probably the plan itself is part of a larger plan (“Get ready to leave the house!”), which is part of plans on a wider and wider scale (“Go to work!”, “Keep my job!”, “Be a productive and responsible citizen”, or whatever). Each scale requires attention at some point. Somewhere in navigating this complex hierarchy the need for keys popped into mind, and like a circus performer setting plates spinning on poles, your attention focussed on it long enough to construct a plan, but then moved on to the next plate

And sometimes spinning plates fall. Our memories, even for our goals, are embedded in webs of associations. That can be the physical environment in which we form them, which is why revisiting our childhood home can bring back a flood of previously forgotten memories, or it can be the mental environment – the set of things we were just thinking about when that thing popped into mind.

The Doorway Effect occurs because we change both the physical and mental environments, moving to a different room and thinking about different things. That hastily thought up goal, which was probably only one plate among the many we’re trying to spin, gets forgotten when the context changes.

Brooding, which is known among cognitive scientists as morbid rumination, is a mental state familiar to most of us, in which we can’t seem to stop chewing over the ways in which things are wrong with ourselves and our lives. This broken-record fretting is not healthy or helpful. It can be a precursor to depression and is disproportionately common among city dwellers compared with people living outside urban areas, studies show.

such rumination also is strongly associated with increased activity in a portion of the brain known as the subgenual prefrontal cortex.

gathered 38 healthy, adult city dwellers and asked them to complete a questionnaire to determine their normal level of morbid rumination. The researchers also checked for brain activity in each volunteer’s subgenual prefrontal cortex, using scans that track blood flow through the brain. Greater blood flow to parts of the brain usually signals more activity in those areas.

walking along the highway had not soothed people’s minds. Blood flow to their subgenual prefrontal cortex was still high and their broodiness scores were unchanged. But the volunteers who had strolled along the quiet, tree-lined paths showed slight but meaningful improvements in their mental health, according to their scores on the questionnaire. They were not dwelling on the negative aspects of their lives as much as they had been before the walk. They also had less blood flow to the subgenual prefrontal cortex. That portion of their brains were quieter.

many questions remain, he said, including how much time in nature is sufficient or ideal for our mental health, as well as what aspects of the natural world are most soothing. Is it the greenery, quiet, sunniness, loamy smells, all of those, or something else that lifts our moods?

Self-driving cars navigate by GPS. What happens if a self-driving school bus is speeding down the highway and loses its navigation system at 75 mph because of a jammer in the next lane?

Because they are not calculating the trajectory for the stationary fire truck, only for objects in motion (like pedestrians or bicyclists), they can’t react quickly to register a previously stationary object as an object in motion.

If the car was programmed to save the car’s occupants at the expense of pedestrians, the autonomous-car industry is facing its first public moment of moral reckoning.

This kind of blind optimism about technology, the assumption that tech is always the right answer, is a kind of bias that I call technochauvinism.

With driving, the stakes are much higher. In a self-driving car, death is an unavoidable feature, not a bug.

By this point, many people know about the trolley problem as an example of an ethical decision that has to be programmed into a self-driving car.

an overwhelming number of tech people (and investors) seem to want self-driving cars so badly that they are willing to ignore evidence suggesting that self-driving cars could cause as much harm as good

t imagine the opposite scenario: The car is programmed to sacrifice the driver and the occupants to preserve the lives of bystanders. Would you get into that car with your child? Would you let anyone in your family ride in it? Do you want to be on the road, or on the sidewalk, or on a bicycle, next to cars that have no drivers and have unreliable software that is designed to kill you or the driver?

Plenty of people want self-driving cars to make their lives easier, but self-driving cars aren’t the only way to fix America’s traffic problems. One straightforward solution would be to invest more in public transportation.

Public-transportation funding is a complex issue that requires massive, collaborative effort over a period of years. It involves government bureaucracy. This is exactly the kind of project that tech people often avoid attacking, because it takes a really long time and the fixes are complicated.

Plenty of people, including technologists, are sounding warnings about self-driving cars and how they attempt to tackle very hard problems that haven’t yet been solved. People are warning of a likely future for self-driving cars that is neither safe nor ethical nor toward the greater good. Still,  the idea that self-driving cars are nifty and coming soon is often the accepted wisdom, and there’s a tendency to forget that technologists have been saying “coming soon” for decades now.

People cumulatively watch more than a billion YouTube hours daily world-wide, a 10-fold increase from 2012

After the Journal this week provided examples of how the site still promotes deceptive and divisive videos, YouTube executives said the recommendations were a problem.

When users show a political bias in what they choose to view, YouTube typically recommends videos that echo those biases, often with more-extreme viewpoints.

Such recommendations play into concerns about how social-media sites can amplify extremist voices, sow misinformation and isolate users in “filter bubbles”

Unlike Facebook Inc. and Twitter Inc. sites, where users see content from accounts they choose to follow, YouTube takes an active role in pushing information to users they likely wouldn’t have otherwise seen.

“The editorial policy of these new platforms is to essentially not have one,”

“That sounded great when it was all about free speech and ‘in the marketplace of ideas, only the best ones win.’ But we’re seeing again and again that that’s not what happens. What’s happening instead is the systems are being gamed and people are being gamed.”

YouTube has been tweaking its algorithm since last autumn to surface what its executives call “more authoritative” news source

YouTube last week said it is considering a design change to promote relevant information from credible news sources alongside videos that push conspiracy theories.

The Journal investigation found YouTube’s recommendations often lead users to channels that feature conspiracy theories, partisan viewpoints and misleading videos, even when those users haven’t shown interest in such content.

YouTube engineered its algorithm several years ago to make the site “sticky”—to recommend videos that keep users staying to watch still more, said current and former YouTube engineers who helped build it. The site earns money selling ads that run before and during videos.

YouTube’s algorithm tweaks don’t appear to have changed how YouTube recommends videos on its home page. On the home page, the algorithm provides a personalized feed for each logged-in user largely based on what the user has watched.

There is another way to calculate recommendations, demonstrated by YouTube’s parent, Alphabet Inc.’s Google. It has designed its search-engine algorithms to recommend sources that are authoritative, not just popular.

Google spokeswoman Crystal Dahlen said that Google improved its algorithm last year “to surface more authoritative content, to help prevent the spread of blatantly misleading, low-quality, offensive or downright false information,” adding that it is “working with the YouTube team to help share learnings.”

In recent weeks, it has expanded that change to other news-related queries. Since then, the Journal’s tests show, news searches in YouTube return fewer videos from highly partisan channels.

YouTube’s recommendations became even more effective at keeping people on the site in 2016, when the company began employing an artificial-intelligence technique called a deep neural network that makes connections between videos that humans wouldn’t. The algorithm uses hundreds of signals, YouTube says, but the most important remains what a given user has watched.

Using a deep neural network makes the recommendations more of a black box to engineers than previous techniques,

“We don’t have to think as much,” he said. “We’ll just give it some raw data and let it figure it out.”

To better understand the algorithm, the Journal enlisted former YouTube engineer Guillaume Chaslot, who worked on its recommendation engine, to analyze thousands of YouTube’s recommendations on the most popular news-related queries

Mr. Chaslot created a computer program that simulates the “rabbit hole” users often descend into when surfing the site. In the Journal study, the program collected the top five results to a given search. Next, it gathered the top three recommendations that YouTube promoted once the program clicked on each of those results. Then it gathered the top three recommendations for each of those promoted videos, continuing four clicks from the original search.

The first analysis, of November’s top search terms, showed YouTube frequently led users to divisive and misleading videos. On the 21 news-related searches left after eliminating queries about entertainment, sports and gaming—such as “Trump,” “North Korea” and “bitcoin”—YouTube most frequently recommended these videos:

The algorithm doesn’t seek out extreme videos, they said, but looks for clips that data show are already drawing high traffic and keeping people on the site. Those videos often tend to be sensationalist and on the extreme fringe, the engineers said.

Repeated tests by the Journal as recently as this week showed the home page often fed far-right or far-left videos to users who watched relatively mainstream news sources, such as Fox News and MSNBC.

Searching some topics and then returning to the home page without doing a new search can produce recommendations that push users toward conspiracy theories even if they seek out just mainstream sources.

After searching for “9/11” last month, then clicking on a single CNN clip about the attacks, and then returning to the home page, the fifth and sixth recommended videos were about claims the U.S. government carried out the attacks. One, titled “Footage Shows Military Plane hitting WTC Tower on 9/11—13 Witnesses React”—had 5.3 million views.

The company's changes include an effort to boost the content of local news outlets, which have suffered sizable subscription and readership declines

The changes follow another major News Feed redesign, announced last week, in which Facebook said users would begin to see less content from news organizations and brands in favor of "meaningful" posts from friends and family.

Currently, 5 percent of Facebook posts are generated by news organizations; that number is expected to drop to 4 percent after the redesign, Zuckerberg said.

On Friday, Google announced it would cancel a two-month-old experiment, called Knowledge Panel, that informed its users that a news article had been disputed by independent fact-checking organizations. Conservatives had complained the feature unfairly targeted a right-leaning outlet.

More than two-thirds of Americans now get some of their news from social media, according to Pew Research Center.

"The hard question we've struggled with is how to decide what news sources are broadly trusted," Zuckerberg wrote. "We could try to make that decision ourselves, but that's not something we're comfortable with. We considered asking outside experts, which would take the decision out of our hands but would likely not solve the objectivity problem. Or we could ask you -- the community -- and have your feedback determine the ranking."

"Just by putting things out to a vote in terms of what the community would find trustworthy undermines the role for any serious institutionalized process to determine what’s quality and what’s not,” he said.

rther criticism that the social network had become vulnerable to bad actors seeking to spread disinformation.

Jay Rosen, a journalism professor at New York University, said that Facebook learned the wrong lesson from Trending Topics, which was to try to avoid politics at all costs

“One of the things that can happen if you are determined to avoid politics at all costs is you are driven to illusory solutions,” he said. “I don’t think there is any alternative to using your judgement. But Facebook is convinced that there is. This idea that they can avoid judgement is part of their problem.”

Facebook revealed few details about how it is conducting its trust surveys,

That shift has empowered Facebook and Google, putting them in an uncomfortable position of deciding what news they should distribute to their global audiences. But it also has led to questions about whether these corporations should be considered media companie

Some experts wondered whether Facebook's latest effort could be gamed.

"This seems like a positive step toward improving the news environment on Facebook," Diresta said. "That said, the potential downside is that the survey approach unfairly penalizes emerging publications."

The safety of glyphosate is not settled science.

they could ghostwrite research on glyphosate by hiring academics to put their names on papers that were actually written by Monsanto.

The issue of glyphosate’s safety is not a trivial one for Americans. Over the last two decades, Monsanto has genetically re-engineered corn, soybeans and cotton so it is much easier to spray them with the weed killer, and some 220 million pounds of glyphosate were used in 2015 in the United States.

how to measure the Internet’s contribution to our lives? A few years ago, Austan Goolsbee of the University of Chicago and Peter J. Klenow of Stanford gave it a shot. They estimated that the value consumers gained from the Internet amounted to about 2 percent of their income — an order of magnitude larger than what they spent to go online. Their trick was to measure not only how much money users spent on access but also how much of their leisure time they spent online.

people who had access to a search engine took 15 minutes less to answer a question than those without online access.

Gross domestic product has always failed to capture many things — from the costs of pollution and traffic jams to the gains of unpaid household work. A

Varian estimated that a search engine might be worth about $500 annually to the average worker. Across the working population, this would add up to $65 billion a year.

the consumer surplus from free online services — the value derived by consumers from the experience above what they paid for it — has been growing by $34 billion a year, on average, since 2002. If it were tacked on as “economic output,” it would add about 0.26 of a percentage point to annual G.D.P. growth.

The Internet is hardly the first technology to offer consumers valuable free goods. The consumer surplus from television is about five times as large as that delivered by free stuff online, according to Mr. Brynjolfsson’s calculations.

Measured in money — what it contributes to G.D.P. — the recording industry is shrinking. Yet never before have Americans had access to so much music.

. The missed consumer surplus from the Internet may be no bigger than the unmeasured gains in the production, for example, of electric light.

The amount of time Americans devote to the Internet has doubled in the last five years.

“We know less about the sources of value in the economy than we did 25 years ago,”

Capacity has increased 1,500 percent over the last half-century, and has nearly doubled over the last decade alone,

a deadly miscalculation.

“Masks remain in short supply globally.”

No one could predict a ship going aground in the middle of the canal, just like no one predicted where the pandemic would come from. Just like we can’t predict the next cyberattack, or the next financial crisis, but we know it’s going to happen.”

Each day the stalemate continues holds up goods worth $9.6 billion,

Money not spent filling warehouses with unneeded auto parts is, at least in part, money that can be given to shareholders in the form of dividends.

intensified the strains on the shipping industry,

the unloading of those containers has been slowed as dockworkers and truck drivers have been struck by Covid-19 or forced to stay home to attend to children who are out of school.

Retailers in North America have been frantically restocking depleted inventories, putting a strain on shipping companies in what is normally the slack season on trans-Pacific routes.

Even a few days of disruption in the Suez could exacerbate that situation.

If the Suez remains clogged for more than a few days, the stakes would rise drastically.

Those now en route to the Suez may opt to head south and navigate around Africa, adding weeks to their journeys and burning additional fuel — a cost ultimately borne by consumers.

“This could make a really bad crisis even worse,”

transportation experts are scrambling to figure out how to better adapt public transit to the needs of riders as cities begin to emerge from the pandemic.

In India, a company that sells secondhand cars online saw sales swell in 2020 and its own value as a company jump to $1 billion, according to news reports. Elsewhere, bike sales have grown, suggesting that people are pedaling a bit more.

Both London and Paris sought to use lockdowns to expand bike lanes.

ridership was just over half of normal in the first two months of this year.

Most importantly, if transit systems continue to lose passenger fare revenues, they will not be able to make the investments necessary to be efficient, safe and attractive to commuters.

The city transit agency, which had once projected a budget surplus for 2020, has instead been relying on government bailouts since the pandemic hit.

“only travel when absolutely necessary.”

There’s even more distress in cities where people rely in large part on private bus companies.

Strikes by bus drivers have made bus travel even slower and more chaotic.

efficient bus system is critical for Rio to not only reduce its carbon emissions but also to clean its air. “It’s not just an environmental issue, but a public health issue,” Ms. Celidonio said.

“Those cities that were investing, they will get out stronger,”