The speed of the change is astonishing. Since entering America in 2017, TikTok has picked up more users than all but a handful of social-media apps, which have been around more than twice as long (see chart 1). Among young audiences, it crushes the competition. Americans aged 18-24 spend an hour a day on TikTok, twice as long as they spend on Instagram and Snapchat and more than five times as long as they spend on Facebook, which these days is mainly a medium for communicating with the grandparents (see chart 2).

TikTok’s success has prompted its rivals to reinvent themselves. Meta, which owns Facebook and Instagram, has turned both apps’ main feeds into algorithmically sorted “discovery engines” and launched Reels, a TikTok clone bolted onto Facebook and Instagram. Similar lookalike products have been created by YouTube (Shorts), Snapchat (Spotlight), Pinterest (Watch) and even Netflix (Fast Laughs). The latest TikTok-inspired makeover, announced on March 8th, was by Spotify, a music app whose homepage now features video clips that can be skipped by swiping up. (TikTok’s Chinese sister app, Douyin, is having a similar effect in its home market, where digital giants like Tencent are increasingly putting short videos at the centre of their offerings.)

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Short-form video has taken over social media. Although users have a seemingly endless appetite for the format, it is proving less profitable for platforms than the old news feed https://t.co/3uUiiiW4VL

— The Economist (@TheEconomist) March 21, 2023

I had a most remarkable but unsettling experience last week. Craig Mundie, the former chief research and strategy officer for Microsoft, was giving me a demonstration of GPT-4, the most advanced version of the artificial intelligence chatbot ChatGPT, developed by OpenAI and launched in November. Craig was preparing to brief the board of my wife’s museum, Planet Word, of which he is a member, about the effect ChatGPT will have on words, language and innovation.

“You need to understand,” Craig warned me before he started his demo, “this is going to change everything about how we do everything. I think that it represents mankind’s greatest invention to date. It is qualitatively different — and it will be transformational.”

Large language modules like ChatGPT will steadily increase in their capabilities, Craig added, and take us “toward a form of artificial general intelligence,” delivering efficiencies in operations, ideas, discoveries and insights “that have never been attainable before across every domain.”

Then he did a demonstration. And I realized Craig’s words were an understatement.

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Insightful article by @tomfriedman. “Are we ready? It’s not looking that way: We’re debating whether to ban books at the dawn of a technology that can summarize or answer questions about virtually every book for everyone everywhere in a second.” #GPT4 https://t.co/Z3APrDVrlJ

— Michael Y. Uohara, MD (@mikeuohara_md) March 22, 2023

…the silt never ceased arriving in Lake Powell, the reservoir above the dam. Each day on average for the past 60 years, the equivalent of 61 supersize Mississippi River barge-loads of sand and mud have been deposited there. The total accumulation would bury the length of Manhattan to a depth of 126 feet — close to the height of a 12-story building.

For years this mud was hidden beneath Lake Powell’s blue waters. Now, as climate change and overuse of the Colorado have drawn the reservoir down to record lows, the silt is exposed — forming “‌mud glaciers‌‌.” And because of a gradient created when the lake level falls, the giant mud blobs are moving at a rate of 100 feet or more per day toward the dam.

These advancing mud blobs pose existential threats to the water supply of the Southwest: One day they could form a constipating plug that blocks Glen Canyon, preventing the water from flowing downriver. They could also someday endanger the structural integrity of the dam.

Asked about the dangers that the sediment posed, Floyd Dominy, the commissioner of the U.S. Bureau of Reclamation in 1963, later quipped, “We will let people in the future worry about it.”

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In Opinion

Near the Glen Canyon Dam on the Colorado River, "advancing mud blobs pose existential threats to the water supply of the Southwest," Dale Maharidge, a professor at Columbia University’s Graduate School of Journalism, writes in a guest essay. https://t.co/ZaShKLoaxL

— The New York Times (@nytimes) March 20, 2023

If Texas points to the future, what lessons does it offer? One is that its leaders understood earlier than most that companies and people are mobile. Rick Perry, a former governor, went on “hunting trips” in search of business prey in other states; Greg Abbott, today’s governor, has followed suit. Covid-19 highlighted the attractions of a state which was quicker to leave lockdown than many others, such as California, and boasts a cheaper cost of living and fewer restrictions. Texas has offered some incentives to firms, but much of the growth has been down to the lure of a place with no income tax, lots of land for expansion, less red tape and a pro-business attitude. Granted, liberals and moderates abhor the state’s shrill, deep-red politics. Mr Abbott courts headlines by, for example, sending busloads of unauthorised immigrants to New York. Such stunts do not seem to have deterred many individuals or companies from moving to Texas, however; it remains to be seen whether recent draconian abortion laws will.

Another lesson from Texas is that nurturing one golden goose is not enough. The oil shock of the 1980s was painful, but the state has since diversified its economy. Finance and property have blossomed. The big cities all have different strengths: tech in Austin, energy in Houston, finance and more in Dallas. Instead of relying solely on oil and gas until the wells run dry, Texas has positioned itself on the cutting edge of new energy technologies (although listening to the rhetoric of the state’s politicians, you would not always know it). Places that have only one strong industry should start thinking about how they can use it as a platform to launch the next new thing.

The last lesson, however, is a cautionary one. For much of its history, Texas has had an exceptionally lean government. It has been loth to invest in the people and projects required for the future, including education and roads. Of late, as its formidable growth shows, it has got away with this. But the lean approach almost certainly has its limits, which it would be complacent to ignore.

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Sometime in the 2040s, Texas is likely to pass California in population. Like it or not, America is becoming a bit more Texan every day https://t.co/qC2xA3B5ra

— The Economist (@TheEconomist) March 16, 2023

Workers who have ever dreaded writing a briefing for your boss, building a digital presentation of your ideas or sifting through long email threads to get caught up on the latest projects may soon have some assistance — in the form of artificial intelligence.

At least that’s what Google aims to do for workers who use its suite of enterprise software tools called Google Workspace, which includes Google Docs, Google Sheets and Gmail. The tech giant plans to integrate its office products with generative AI that can do things like generate an entire document or create images based on a prompt. Workers will be able to access these capabilities by clicking a new wand icon that’ll appear in their apps.

Google plans to begin rolling out some features, starting with writing functions in Google Docs and Gmail, to select enterprise customers within the next couple of weeks, it said. It’s unclear when other features may become available.

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Google Workspace, including Google Docs, Sheets and Gmail, will soon include generative AI tools that aim to aid with work. https://t.co/knON3lnVNg

— The Washington Post (@washingtonpost) March 14, 2023

The City of York Council and the Cathedrals Fabric Commission for England have given the go-ahead to install photovoltaic panels on the roof of York Minster.

The cathedral of York, North Yorkshire, is considered one of the largest of its kind in Northern Europe.

The installation of 199 solar panels on the South Quire Aisle, dating back to 1361, will generate 75,000kWh of power annually and surplus power will be stored in underground batteries to power evening services and events.

Additionally, a panel inside the Minster will display power production and carbon savings, promoting the importance of decarbonisation to visitors.

Authorities say that the decarbonisation project can play a significant role in helping Minster achieve its commitments to sustainability.

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Will this be the UK’s first net zero cathedral?

Nearly 200 solar panels will be installed on the roof of York Minster while excess power will be stored in underground batteries@CityofYork@churchofengland

#energycrisis #climatechange #ClimateCrisis https://t.co/ygjaM1rEW7

— Energy Live News (@EnergyLiveNews) March 14, 2023

There was a certain circularity in the reasoning here: only humans can have a soul, which is why robots don’t have a soul. Combine this with the popular pseudo-neuroscientific view — that, as Harari expressed it, when “scientists opened up the [human] black box, they discovered there neither soul, nor free will, nor ‘self’ — but only genes, hormones and neurons” — and all the ingredients for a perfect confrontation were there.

The headlines were ready. “Religious groups fight AI research because ‘it threatens the soul’.” Precisely because they overlap across the human, the potential for conflict between science and religion is always a live one, whether talking about algorithms in the 21st century or astrology in the fourth.

And yet, if the long history of science and religion has anything to teach us, it is that this conflict is only potential, not inevitable.

Indeed, if the main argument of my book is right, and it is the complex, multilayered, and varied natures of the human beast that lie at the heart of so many interactions between science and religion, then it is just possible that the age of AI might open up a space for enriching dialogue rather than closing it down in the face of defensive argument.

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Is artificial intelligence a threat to theology? https://t.co/eiDYzjRFoN

— Church Times (@ChurchTimes) March 10, 2023

Last June, Keller participated in an inpatient immunotherapy trial at the National Institutes of Health’s National Cancer Institute, which he said had “shown great promise in potentially curing cancer.” The 72-year-old is returning to the Bethesda, Maryland, facility next month to do another variation of that immunotherapy on new tumors.

The tumors “are unfortunately in some fairly inconvenient places,” Keller said, “so the doctors encouraged us to go through the treatment again, this time targeting a different genetic marker of the cancer.”

“It was brutal last June, so we approach this with an awareness of how much prayer we need,” Keller wrote on Twitter. “Please pray for our trust and dependence on God, for his providential oversight of the medical preparations now in process, and for our desire to glorify God in whatever comes our way. Thank You.”

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“Please pray for our trust and dependence on God, for his providential oversight of the medical preparations now in process, and for our desire to glorify God in whatever comes our way.”https://t.co/xhlyOxhdvA

— Christianity Today (@CTmagazine) March 13, 2023

It wouldn’t be completely out of character for Joe Rogan, the comedian turned podcaster, to endorse a “libido-boosting” coffee brand for men.

But when a video circulating on TikTok recently showed Mr. Rogan and his guest, Andrew Huberman, hawking the coffee, some eagle-eyed viewers were shocked — including Dr. Huberman.

“Yep that’s fake,” Dr. Huberman wrote on Twitter after seeing the ad, in which he appears to praise the coffee’s testosterone-boosting potential, even though he never did.

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Making deepfakes once required elaborate software. But now there is a growing number of "cheapfakes" — convincing fake videos easily made by meme-makers and misinformation peddlers who are embracing AI. https://t.co/H2h42mr4IY

— The New York Times (@nytimes) March 12, 2023

Parishes across England and Wales can now register to participate in Churches Count on Nature, an annual scheme where people visit churchyards and record the plant and animal species they encounter.

An adult and child taking part in the Churches Count on Nature, using a magnifying glass to look at wildlifeCaring for God’s Acre
The biodiversity survey, supported by environmental charities A Rocha UK and Caring for God’s Acre, as well as the Church of England and the Church in Wales, will take place from June 3 to 11, 2023.

In the last two years, 900 counting events took place across churches in England and Wales, and over 27,000 wildlife records were submitted to Caring for God’s Acre. Churches across all denominations take part in the count each year.

The data will be used to determine where rare and endangered species are located in the country and to aid churches of all denominations to increase biodiversity on their land for the enrichment of the environment and local communities. This year, species on some of the 17,500 acres of churchyards in England alone will be mapped, with a further 1,282 acres of churchyards in Wales.

As graveyards and church land are usually undisturbed and not used for farming, they can be host to a great variety of wildlife not seen in other green spaces, particularly in urban areas. Old churchyards often have fantastic flowery and species-rich grasslands as they have been so little disturbed over the centuries.

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Parishes across England and Wales can now register to participate in Churches Count on Nature. 🌳

Read more at https://t.co/wrywVybO6C.

— The Church of England (@churchofengland) March 8, 2023

“I think we might exceed a one-to-one ratio of humanoid robots to humans,” Elon Musk declared on March 1st. Coming from the self-styled technoking of Tesla, it was not so much a prediction as a promise. Mr Musk’s car company is developing one such artificially intelligent automaton, codenamed Optimus, for use at home and in the factory. His remarks, made during Tesla’s investor day, were accompanied by a video of Optimus walking around apparently unassisted.

Given that Mr Musk did not elaborate how—or when—you get from a promotional clip to an army of more than 8bn robots, this might all smack of science-fiction. But he has waded into a very real debate about the future of work. For certain forms of ai-enabled automation are fast becoming science fact.

Since November Chatgpt, an ai conversationalist, has dazzled users with its passable impression of a human interlocutor. Other “generative” ais have been conjuring up similarly human-like texts, images and sounds by analysing reams of data on the internet. Last month the boss of ibm, a computing giant, forecast that ai will do away with much white-collar clerical work. On March 6th Microsoft announced the launch of a suite of ai “co-pilots” for workers in jobs ranging from sales and marketing to supply-chain management. Excitable observers murmur about a looming job apocalypse.

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Absolute levels of adoption of industrial robots remain low. Even South Korean firms, by far the world’s keenest robot-adopters, employ ten manufacturing workers for every industrial robot https://t.co/mwHsvq9LoZ

— The Economist (@TheEconomist) March 9, 2023

The Argonne National Laboratory in the US has essentially cracked the battery technology for electric vehicles, discovering a way to raise the future driving range of standard EVs to a thousand miles or more. It promises to do so cheaply without exhausting the global supply of critical minerals in the process.

The joint project with the Illinois Institute of Technology (IIT) has achieved a radical jump in the energy density of battery cells. The typical lithium-ion battery used in the car industry today stores about 200 watt-hours per kilo (Wh/kg). Their lab experiment has already reached 675 Wh/kg with a lithium-air variant.

This is a high enough density to power trucks, trains, and arguably mid-haul aircraft, long thought to be beyond the reach of electrification. The team believes it can reach 1,200 Wh/kg. If so, almost all global transport can be decarbonised more easily than we thought, and probably at a negative net cost compared to continuation of the hydrocarbon status quo.

The Argonne Laboratory in Chicago is not alone in pushing the boundaries of energy storage and EV technology. The specialist press reports eye-watering breakthroughs almost every month. America, Europe, China and Japan are all in a feverish global race for battery dominance – or survival – and hedge funds are swarming over the field.

Read it all(registration or subscription).

The @argonne National Laboratory and @illinoistech have achieved a breakthrough in the energy density of battery cells that could push EVs beyond 1,000 miles on a charge, and potentially, eventually, power trucks, trains and mid-haul aircraft.https://t.co/qZOFi28aOW

— Andrew Westrope (@andrew_westrope) March 8, 2023

When the US last week added several units of BGI Group, a Chinese genetic sequencing firm, to its entity list restricting technology transfer, the primary justification was that the company had been “contributing to monitoring and surveillance”, including of ethnic minorities. Yet the human rights implications of China’s domestic surveillance state aren’t Washington’s only concern. The new regulations also state that BGI’s programmes of “collection and analysis of genetic data [present] a significant risk of diversion to China’s military”. 

Biotechnology has quietly become America’s newest national security concern. From Congress to the intelligence agencies, Washington’s leaders have concluded that control over biotechnologies will be critical not only to the country’s health, but to national security as well.

Biotech tools have made rapid advances of late, enabling new therapies, vaccines, manufacturing techniques — and biosecurity risks. It’s long been recognised that DNA is just a complex type of code, telling cells how to operate. Gene-editing technologies have become more precise and vastly cheaper, making it easier than ever to “reprogramme” organisms. In addition, more powerful computing capabilities have provided new clarity into the meaning of DNA’s “code”.

One use of these capabilities is for manufacturing. For centuries, humans have relied on micro-organisms to produce beer and yoghurt, but with the right reprogramming, bacteria can be made to produce many new types of chemicals. In 2010, Darpa, the Pentagon’s long-range R&D arm, launched a programme called Living Foundries, aiming to synthetically manufacture 1,000 molecules….

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This author of Chip War keeping us on our toes re new competition coming down the track. There’s a new US national security obsession — biotech via @FT
https://t.co/tZrtlkHK9r

— George Magnus (@georgemagnus1) March 7, 2023

More than 190 countries have reached a landmark deal for protecting the biodiversity of the world’s oceans, agreeing for the first time on a common framework for establishing new protected areas in international waters.

The treaty, whose text was finalized Saturday night by diplomats at the U.N. headquarters after years of stalled talks, will help safeguard the high seas, which lie beyond national boundaries and make up two-thirds of Earth’s ocean surface. Member states have been trying to agree on the long-awaited treaty for almost 20 years.

Environmental advocacy groups heralded the finalized text — which still needs to be ratified by the United Nations — as a new chapter for Earth’s high seas. Just 1.2 percent of them are currently environmentally protected, exposing the vast array of marine species that teem beneath the surface — from tiny plankton to giant whales — to threats such as pollution, overfishing, shipping and deep-sea mining.

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More than 190 countries have reached a landmark deal for protecting the biodiversity of the world’s oceans, agreeing for the first time on a common framework for establishing new protected areas in international waters.https://t.co/vbfbMP1329

— The Washington Post (@washingtonpost) March 5, 2023

In the contest of the century—the U.S. rivalry with China—the deciding factor will be innovation power. Technological advances in the next five to ten years will determine which country gains the upper hand in this world-shaping competition. The challenge for the United States, however, is that government officials are incentivized to avoid risk and focus on the short term, leaving the country to chronically underinvest in the technologies of the future.

If necessity is the mother of invention, war is the midwife of innovation. Speaking to Ukrainians on a visit to Kyiv in the fall of 2022, I heard from many that the first months of the war were the most productive of their lives. The United States’ last truly global war—World War II—led to the widespread adoption of penicillin, a revolution in nuclear technology, and a breakthrough in computer science. Now, the United States must innovate in peacetime, faster than ever before. By failing to do so, it is eroding its ability to deter—and, if necessary, to fight and win—the next war.

The alternative could be disastrous. Hypersonic missiles could leave the United States defenseless, and cyberattacks could cripple the country’s electric grid. Perhaps even more important, the warfare of the future will target individuals in completely new ways: authoritarian states such as China and Russia may be able to collect individual data on Americans’ shopping habits, location, and even DNA profiles, allowing for tailor-made disinformation campaigns and even targeted biological attacks and assassinations. To avert these horrors, the United States needs to make sure it remains ahead of its technological competitors.

The principles that have defined life in the United States—freedom, capitalism, individual effort—were the right ones for the past and remain so for the future. These basic values lie at the foundation of an innovation ecosystem that is still the envy of the world. They have enabled breakthroughs that have transformed everyday life around the world. The United States started the innovation race in pole position, but it cannot rest assured it will remain there. Silicon Valley’s old mantra holds true not just in industry but also in geopolitics: innovate or die.

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Eric Schmidt: Why Technology Will Define the Future of Geopolitics https://t.co/LP2imSEoSu

— Albert Royo (@AlbertRoyo5) February 28, 2023

It’s been a widely accepted trend in financial circles for nearly two decades. But suddenly, Republicans have launched an assault on a philosophy that says that companies should be concerned with not just profits but also how their businesses affect the environment and society.

More than $18 trillion is held in investment funds that follow the investing principle known as E.S.G. — shorthand for prioritizing environmental, social and governance factors — a strategy that has been adopted by major corporations around the globe.

Now, Republicans around the country say Wall Street has taken a sharp left turn, attacking what they term “woke capitalism” and dragging businesses, their onetime allies, into the culture wars.

The rancor escalated on Tuesday as Republicans in Congress used their new majority in the House to vote by a margin of 216 to 204 to repeal a Department of Labor rule that allows retirement funds to consider climate change and other factors when choosing companies in which to invest. In the Senate, Republicans are lining up behind a similar effort and have been joined by Senator Joe Manchin III, Democrat of West Virginia.

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(NYT front page) The Cultural and Partisan Divide
Of Socially Conscious #Investing https://t.co/uLO6W0hcKW #economy #stockmarket #ESG #corporations #ecology #culture #21stc

— Kendall Harmon (@KendallHarmon6) March 1, 2023

At 82 years old, with an aggressive form of blood cancer that six courses of chemotherapy had failed to eliminate, “Paul” appeared to be out of options. With each long and unpleasant round of treatment, his doctors had been working their way down a list of common cancer drugs, hoping to hit on something that would prove effective—and crossing them off one by one. The usual cancer killers were not doing their job.

With nothing to lose, Paul’s doctors enrolled him in a trial set up by the Medical University of Vienna in Austria, where he lives. The university was testing a new matchmaking technology developed by a UK-based company called Exscientia that pairs individual patients with the precise drugs they need, taking into account the subtle biological differences between people.

The researchers took a small sample of tissue from Paul (his real name is not known because his identity was obscured in the trial). They divided the sample, which included both normal cells and cancer cells, into more than a hundred pieces and exposed them to various cocktails of drugs. Then, using robotic automation and computer vision (machine-learning models trained to identify small changes in cells), they watched to see what would happen.

In effect, the researchers were doing what the doctors had done: trying different drugs to see what worked. But instead of putting a patient through multiple months-long courses of chemotherapy, they were testing dozens of treatments all at the same time.

The approach allowed the team to carry out an exhaustive search for the right drug. Some of the medicines didn’t kill Paul’s cancer cells. Others harmed his healthy cells. Paul was too frail to take the drug that came out on top. So he was given the runner-up in the matchmaking process: a cancer drug marketed by the pharma giant Johnson & Johnson that Paul’s doctors had not tried because previous trials had suggested it was not effective at treating his type of cancer.

It worked. Two years on, Paul was in complete remission—his cancer was gone.

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On average, it takes more than 10 years and billions of dollars to develop a new drug.

Incorporating AI into the drug development pipeline could help create cheaper pharmaceuticals faster. https://t.co/xYVZFyA5fY

— MIT Technology Review (@techreview) February 15, 2023

The brave new world Aldous Huxley describes in his novel of that title features the “feelies”. In 1932, its year of publication, movies were turning into talkies. Feelies must have seemed a logical, if creepy, extension of that. The book alludes to a film at a local theatre with a love scene on a bearskin rug, in which the sensation of every hair of the bear is reproduced.

The feelies have still not arrived. But people are working on them. In computer games and virtual reality (vr), two heirs to cinema’s role in light entertainment, practitioners of the discipline of haptics are attempting to add a sense of touch to those of vision and hearing, to increase the illusion of immersion in a virtual world. In future, they hope, if you reach out to pluck an apple from a tree in such a paradise, your hand will no longer go through it. You will, rather, be able to feel and grasp the fruit, if not actually eat it. Conversely, if it is a paradise lost you are in, and a baddy hiding behind the apple tree shoots you, you will feel the bullet’s impact.

To experience all this a user will wear haptic clothing. The ambitious talk of whole-body haptic suits, but in the case of the apple, the tree and the gunman haptic gloves and a haptic vest would suffice. Moving a gloved hand creates corresponding movement of a user’s virtual hand, with sensations appropriate to objects “touched” being fed back via devices called haptic actuators, incorporated into the glove. Haptic vests similarly stimulate parts of the upper body.

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In computer games and virtual reality (VR), those working on haptics are attempting to add a sense of touch to increase the illusion of immersion in a virtual world https://t.co/KApOqiInVz

— The Economist (@TheEconomist) February 2, 2023

On a dank Friday night in Oxford, an ambassador from the Vatican addresses a gathering of philosophers. The location is St Luke’s Chapel, its walls crisp and whitewashed, its glass windows stained. The father ponders Aristotle’s insights on the good life.

But for the invocation for audience members to tweet about the event, this might be a scene from the 15th century. Yet the subject matter under discussion could not be more contemporary: robots and what to do about them.

Father Paolo Benanti, the speaker, is the Pope’s adviser on artificial intelligence. His urgent message to the assembled boffins, fellows of the newly created Institute for Ethics in AI at Oxford University, is that we are in danger of becoming an “algocracy”, a society ruled by algorithms. “We must recognise how order is made, how power is shifted by these new tools,” Benanti pleads. “What rights do we want to sacrifice in the name of efficiency?”

These questions posed by Benanti are anything but academic. Much of our life, from what books we buy to what news we consume, is already heavily influenced by algorithms. But the past two years have seen a quantum leap in the quality and sophistication of artificial intelligence. We have entered what many experts are now describing as a golden age of AI.

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What does it mean to be human in the age of advanced AI?

I spent some time with the philosophers of Oxford for The Sunday Times Magazine to find out. It involved a lot of wine tasting. https://t.co/znZQTcCOTY

— Josh Glancy (@joshglancy) January 29, 2023

Advanced artificial intelligence (AI) could “kill everyone” and should be regulated like nuclear weapons, experts have warned.

Superhuman algorithms that outperform mankind are on the way and may present just as much threat to humans as we posed to the dodo, researchers from Oxford University told MPs at the Science and Technology Select Committee.

The committee heard how advanced AI could take control of its own programming if it learned to achieve its goals in a different way than originally intended.

Doctoral student Michael Cohen said: “With superhuman AI there is a particular risk that is of a different sort of class, which is, well, it could kill everyone.

“If you imagine training a dog with treats it will learn to pick actions that lead to it getting treats, but if the dog finds the treat cupboard it can get the treats itself without doing what we wanted it to do.

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‘Advanced AI could kill everyone’, warn Oxford researchers https://t.co/oBjB2lIFMF

— sarahknapton (@sarahknapton) January 25, 2023

Eighteen months ago, the online used car retailer Carvana had such great prospects that it was worth $80 billion. Now it is valued at less than $1.5 billion, a 98 percent plunge, and is struggling to survive.

Many other tech companies are also seeing their fortunes reverse and their dreams dim. They are shedding employees, cutting back, watching their financial valuations shrivel — even as the larger economy chugs along with a low unemployment rate and a 3.2 percent annualized growth rate in the third quarter.

One largely unacknowledged explanation: An unprecedented era of rock-bottom interest rates has abruptly ended. Money is no longer virtually free.

For over a decade, investors desperate for returns sent their money to Silicon Valley, which pumped it into a wide range of start-ups that might not have received a nod in less heady times. Extreme valuations made it easy to issue stock or take on loans to expand aggressively or to offer sweet deals to potential customers that quickly boosted market share.

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High valuations in Silicon Valley made it easy to issue stock or take on loans to expand aggressively or to offer sweet deals to potential customers that quickly expanded market share. Not anymore, @DavidStreitfeld reports. https://t.co/rHsLe5mXfZ

— NYTimes Tech (@nytimestech) January 24, 2023

In 1904, 180 Americans were trapped by fire in a Pennsylvania coal mine. Two heroes went in to save them, but the rescuers and all but one of the miners perished. Still, that act of heroism touched one of the richest Americans, a man whose steel mills were fired by coal. Andrew Carnegie donated more than $100 million, in today’s money, to recognize heroes in the U.S. and Canada. As we first reported in 2021 — a good deal has changed in 118 years; thousands have been awarded the Carnegie Hero Medal and advances in neuroscience are revealing why some of us may be heroic. We’ll get to the science, but first, meet some of the Carnegie Heroes, including Terryann Thomas.

Terryann Thomas: I remember thinking just almost instantly, “I am not gonna let somebody die.”

Terryann Thomas was a civilian overseeing confiscated property at the headquarters of the Topeka Police Department. In 2015, an agitated man came into the basement property room to demand his bicycle. Thomas turned to find it.

Terryann Thomas: As soon as I turned around and started to walk off, I heard a scream.

Read or watch it it all.

New technological tools often enable fresh scientific discoveries. Take the case of Antonie van Leeuwenhoek, the 17th-century Dutch amateur scientist and pioneer microscopist, who built at least 25 single-lens microscopes with which he studied fleas, weevils, red blood cells, bacteria and his own spermatozoa, among other things.

In hundreds of letters to the Royal Society and other scientific institutions, van Leeuwenhoek meticulously recorded his observations and discoveries, not always for a receptive readership. But he has since been recognised as the father of microbiology, having helped us understand and fight all manner of diseases.

Centuries later, new technological tools are enabling a global community of biologists and amateur scientists to explore the natural world of sound in richer detail and at greater scale than ever before. Just as microscopes helped humans observe things not visible to the naked eye, so ubiquitous microphones and machine learning models enable us to listen to sounds we cannot otherwise hear. We can eavesdrop on an astonishing soundscape of planetary “conversations” among bats, whales, honey bees, elephants, plants and coral reefs. “Sonics is the new optics,” Karen Bakker, a professor at the University of British Columbia, tells me.

Billions of dollars are pouring into so-called generative artificial intelligence, such as OpenAI’s ChatGPT, with scores of start-ups being launched to commercialise these foundation models. But in one sense, generative AI is something of a misnomer: these models are mostly used to rehash existing human knowledge in novel combinations rather than to generate anything genuinely new.

What may have a bigger scientific and societal impact is “additive AI”, using machine learning to explore specific, newly created data sets — derived, for example, from satellite imagery, genome sequencing, quantum sensing or bio-acoustic recordings — and extend the frontiers of human knowledge. When it comes to sonic data, Bakker even raises the tantalising possibility over the next two decades of interspecies communication as humans use machines to translate and replicate animal sounds, creating a kind of Google Translate for the zoo. “We do not yet possess a dictionary of Sperm Whalish, but we now have the raw ingredients to create one,” Bakker writes in her book The Sounds of Life.

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A sonic revolution triggered by advances in hardware and software lets us eavesdrop on planetary conversations #artificalintelligence

Google Translate for the zoo? How humans might talk to animals https://t.co/jNzwbgcK8a

— Leo Cremonezi (@leocremonezi) January 19, 2023

Glossop Parish Church

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A church community in Glossop spent 2022 turning their churchyard into a wildlife sanctuary, cleaning up the surrounding town, and partnering with global environmental initiatives.

Read more at https://t.co/ufFEolZl2K.

— The Church of England (@churchofengland) January 9, 2023

A new type of blood test can detect a hidden toxin behind Alzheimer’s disease years before a patient shows any symptoms of memory loss or confusion.

If the proof-of-concept can be further tested and scaled, the test could significantly speed up diagnosis, giving millions of patients answers and access to proper care long before their disease progresses.

Researchers at the University of Washington (UW) created the novel blood test. It’s designed to pick up on a molecular precursor in the blood that can cause proteins to irregularly fold and clump in the brain, ultimately forming amyloid beta (Aβ) plaques.

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New Blood Test Accurately Predicts Alzheimer's Years Ahead of First Symptoms https://t.co/S2sq3eQpFm

— ScienceAlert (@ScienceAlert) December 22, 2022

The eight teenage girls, some as young as 13, made contact with one another on social media and may have never met before. But last Saturday night they gathered in downtown Toronto and after getting into one altercation wound up surrounding and fatally stabbing a man in an apparent attack over a bottle of liquor, the police said.

The killing, near the main transportation nexus in Canada’s largest city, was the latest and one of the most brazen episodes in the region in which people have been randomly targeted by groups of young attackers.

The 59-year-old victim was yet to be identified by the authorities. He had been staying in homeless shelters since the fall, the police said, and on Saturday night he was outside a shelter in the Financial District when the suspects set their eyes on him.

The suspects — including three 13-year-olds, three 14-year-olds and two 16-year-olds — appeared to have stabbed him after attempting to steal a liquor bottle from him, Sgt. Terry Browne of the Toronto Police Service told the CBC on Wednesday. All have been charged with second-degree murder.

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Eight teenage girls, who ranged from 13 to 16 years old, have been charged with murder in the stabbing death of a 59-year-old man in downtown Toronto. Police said the girls connected on social media before meeting up, possibly for the first time. https://t.co/JPs2Vyshci

— New York Times World (@nytimesworld) December 22, 2022

Midway through a mission to deliver food at George Mason University in Virginia, the little white robot paused. A throng of students headed its way, blocking its path to its destination. The robot weighed its choices: It could let the students pass, attempt a runaround, or try to barrel through. A few seconds elapsed, a decision was made. Whirring up again, the robot splintered the group as it trundled down the middle.

“Sometimes they’ll come at your legs a bit,” says Alice Christensen, an anthropology major who had just opened the lid of another robotic vehicle, taking out her Subway sandwich. Christensen, 22, often summons the vehicles, made by a start-up called Starship Technologies, to deliver food from a campus restaurant, using an app similar to Grubhub or Uber Eats. She doesn’t mind the fees, typically $2.50 a delivery, though she does get annoyed at the occasionally glitchy app and dozens of Starship vehicles that roam the campus, making hundreds of deliveries a day.

“They’re really convenient when you’re pressed for time, but they can be a nuisance,” she says.

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— Shehzad Younis (@shehzadyounis) December 23, 2022

At Mattie Richland Baptist Church in Pineview, Georgia, the adults have been back in Sunday school and the kids led a Black history presentation, but the bus that picks up children for their education program will remain idle until January.

Sunday school, adult forums and other Christian formation classes, already threatened by declines in worship attendance, have been further challenged since COVID-19 shuttered churches and sent their services online. A study by the Hartford Institute for Religion Research said more than half were disrupted in some way. Other research shows religious education for adults has bounced back more than for younger church members.

“For some, it continued without any real major disruptions, and for others, it basically collapsed,” said Scott Thumma, the institute’s director, summing up its 2022 pandemic-related research during an October event at Yale Divinity School. “And the easiest way to make it collapse was to keep religious education for children and youth online. If you kept it online, you probably don’t have a religious education program now.”

The Rev. Scott Zaucha, pastor of St. Ann’s in Woodstock, a mostly white congregation with about 50 attending on Sundays, said its Sunday school had ceased to exist before the pandemic because of its aging congregation. He wondered how to begin it again and learned that online Christian education was not the answer because it seemed like “another thing to try to keep up with” when regular schooling was online.

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“We have a crisis of catechism going on in America right now,” said @UMIChicago CEO Jeffrey Wright, expressing concern for the religious upbringing of the youngest generation. My @RNS story: https://t.co/Ji7MySJBgA

— Adelle Banks (@AMBankstw) December 22, 2022

This was supposed to be the year of returning to the office. The same could be said for 2021, and even the second half of 2020. The office seems to have become a place where we’re always “returning” but never quite “arriving.”

Although office occupancy rates have risen meaningfully, they are still nowhere near pre-pandemic norms in most of the country. In most big cities, offices are still empty more than half the time. Even in Austin, Texas — which has the highest occupancy rate among large cities, according to Kastle Systems badge-in data — workplaces are still much emptier than before the pandemic.

So, what have we learned about hybrid work over the past 12 months?

Hybrid work is the norm. The idea of a tug of war between managers and employees over spending time in the office has been a bit exaggerated. Polls have shown consistently that employees do value some degree of face time and want to be in the office roughly two days a week. Managers would prefer three. For those keeping score at home, that’s a difference of … one day.

“Overwhelmingly, managers are pretty much aligned with employees,” Stanford’s Nicholas Bloom says. The exceptions he has found are people who have “30-plus years of work experience, and have been very successful and have done that all in person … but they are real outliers.” Instead, most bosses are gradually becoming comfortable with managing and evaluating employees they don’t see every day — and not with creepy surveillance software, which Bloom dismisses as “awful.”

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Hybrid work is the norm. The idea of a tug of war between managers & employees over spending time in the office has been a bit exaggerated: “Overwhelmingly, managers are pretty much aligned with employees,” Stanford’s Nicholas Bloom says https://t.co/1XHLXCawo6

— Jim Russell (@ProducerCities) December 22, 2022

ChatGPT, the artificial-intelligence program captivating Silicon Valley with its sophisticated prose, had its origin three years ago, when technology investor Sam Altman became chief executive of the chatbot’s developer, OpenAI.

Mr. Altman decided at that time to move the OpenAI research lab away from its nonprofit roots and turn to a new strategy, as it raced to build software that could fully mirror the intelligence and capabilities of humans—what AI researchers call “artificial general intelligence.” Mr. Altman, who had built a name as president of famed startup accelerator Y Combinator, would oversee the creation of a new for-profit arm, believing OpenAI needed to become an aggressive fundraiser to meet its founding mission.

Since then, OpenAI has landed deep-pocketed partners like Microsoft Corp., MSFT -1.73%decrease; red down pointing triangle created products that have captured the attention of millions of internet users, and is looking to raise more money. Mr. Altman said the company’s tools could transform technology similar to the invention of the smartphone and tackle broader scientific challenges.

“They are incredibly embryonic right now, but as they develop, the creativity boost and new superpowers we get—none of us will want to go back,” Mr. Altman said in an interview.

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“They are incredibly embryonic right now, but as they develop, the creativity boost and new superpowers we get—none of us will want to go back."https://t.co/4ISkgw4kCB

— Andrew Restuccia (@AndrewRestuccia) December 19, 2022