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the most striking feature of this early age of mammals is that it was almost unbelievably hot, so hot that around 50 million years ago there were crocodiles, palm trees, and sand tiger sharks in the Arctic Circle. On the other side of the blue-green orb, in waters that today would surround Antarctica, sea-surface temperatures might have topped an unthinkable 86 degrees Fahrenheit, with near-tropical forests on Antarctica itself. There were perhaps even sprawling, febrile dead zones spanning the tropics, too hot even for animal or plant life of any sort.

This is what you get in an ancient atmosphere with around 1,000 parts per million (ppm) of carbon dioxide. If this number sounds familiar, 1,000 ppm of CO2 is around what humanity is on pace to reach by the end of this century. That should be mildly concerning.

“You put more CO2 in the atmosphere and you get more warming, that’s just super-simple physics that we figured out in the 19th century,” says David Naafs, an organic geochemist at the University of Bristol. “But exactly how much it will warm by the end of the century, we don’t know. Based on our research of these ancient climates, though, it’s probably more than we thought.”

The London Underground is the oldest subway system in the world, so it might seem an unlikely source of innovation for one of the thorniest problems facing humanity in the 21st century: climate change.

While public transit is usually more environmentally friendly than other methods of travel, the Underground is playing a more direct role in a groundbreaking experiment to reduce greenhouse gas emissions from buildings.

The local council for the Borough of Islington in London has developed, planned and installed a way to provide heat and hot water for several hundred homes, a school and two recreation centers, all using otherwise-wasted thermal energy generated mostly by the electric motors and brakes of the Underground’s trains.

“Fires are outrunning us. We’re trying harder than ever to put them out, and they’re continuing to win, more and more, every year,” Williams said. “And it really isn’t for lack of effort. Even when we know it’s been stupid policy to fight every single fire, we’re still trying as hard as we can to do that.”

As the California fires have dominated the news, he’s been asked by friends and journalists why we can’t just fix wildfires, why we can’t just put them out. We have solved all sorts of complex environmental engineering problems. Why not wildfire?

The question illustrates “the root problem that got us into this mess,” he told me. “We think that we as humans should be able to dominate this phenomenon of wildfire. And in reality, we can’t. Even though we can put a person on the moon, and even though we can create this global computer network, we can’t. This is a natural phenomenon that is similar to the ocean in that it is really big, that it is much larger than us when it really gets going.”

examined more than a century of National Oceanic and Atmospheric Administration data across the Lower 48 states: They found that major areas are nearing or have already surpassed the 2-degree Celsius number that's “emerged as a critical threshold for global warming.”

“The potential consequences are daunting. The United Nations Intergovernmental Panel on Climate Change warns that if Earth heats up by an average of 2 degrees Celsius, virtually all the world’s coral reefs will die; retreating ice sheets in Greenland and Antarctica could unleash massive sea level rise; and summertime Arctic sea ice, a shield against further warming, would begin to disappear.”

“Basically … these hot spots are chunks of the future in the present,”

Indonesian officials are monitoring the country's most active volcano after it erupted again Saturday morning, launching hot ash clouds high into the air, and sending lava spewing down the side of the mountain.

Ash plumes shot more than 600 feet into the air as volcanic debris spilled down the slopes of Mount Merapi in Yogyakarta on the densely populated Indonesian island of Java, about 250 miles east of Jakarta. The name "Merapi" loosely translates to "Mountain of Fire."

The volcano erupted hot clouds of ash at least eight times, and sent several pyroclastic flows down its slopes, according to the Indonesia's Center for Volcanology and Geological Hazard Mitigation. No injuries were reported, but local officials are cautioning of more activity to come. The volcano has erupted regularly for hundreds of years.

Nearby, the Adams Natural Meats bison ranch employs shaders and misters. North of the city, chicken farmer Dave Jordan says he cannot put his 10,000 birds out to pasture.

“If they were out in the sun, they would just get cooked.”

. Lingering in the air is the question of whether the climate crisis is making animal agriculture in this part of the world impractical.

For decades, psychologists have puzzled over the ingredients of creative popularity by studying music, because the medium offers literally millions of data points.

Is the thing that separates one-hit wonders from consistent hitmakers luck, or talent, or some complex combination of factors

Berg compiled a data set of more than 3 million songs released from 1959 to 2010 and pulled out the biggest hits. He used an algorithm developed by the company EchoNest to measure the songs’ sonic features, including key, tempo, and danceability.

Johnson also demanded a more aggressive strategy for combating violent crime — which was delivered by his new police chief, Eddie Garcia, who took over the department in early 2021. Parts of it involved tactics such as deploying “violence interrupters” to resolve street-level conflicts and guide those who need them to social services, and cleaning up blighted areas, such as trash-filled vacant lots and dilapidated buildings, where crime can breed.

The plan that Garcia developed, working with criminologists at the University of Texas at San Antonio, also refocused policing in Dallas on “hot spots.”

They divided the city into 101,000 “microgrids” — areas roughly the size of two football fields side-by-side — and discovered that crime was heavily concentrated in relatively few — an apartment complex here or a nightclub parking lot there. Just 50 of these hot spots accounted for almost 10 percent of violent street crime in Dallas.

Stare at a climate map of the world that we expect to inhabit 50 years from now and you see a band of extreme heat encircling the planet’s midriff. Climate modelling from 2020 suggests that within half a century about 30% of the world’s projected population – unless they are forced to move – will live in places with an average temperature above 29C. This is unbearably hot. Currently, no more than 1% of Earth’s land surface is this hot, and those are mainly uninhabited parts of the Sahara.

The scenario is as dramatic as it is because the regions of the world affected most severely by global heating – above all, sub-Saharan Africa – are those expected to experience the most rapid population growth in coming decades.

But despite this population growth, they are also the regions that, on current trends, will contribute least to the emissions that drive the climate disaster.

To assess the validity of this study, the research and analysis team graded their past work on global trends, an effort undertaken every four years since 1996. Past studies, they found, had underestimated the speed with which changes arrived on the global scene.

The risk of conflict within a state — like a civil war or an insurgency — is expected to decline in Latin America, but will remain high in sub-Saharan Africa, in parts of the Middle East and South Asia, as well as in some Asia-Pacific island hot spots, the study warns.

“the health of the global economy increasingly will be linked to how well the developing world does — more so than the traditional West.” In addition to China, the developing nations that “will become especially important to the global economy” include India, Brazil, Colombia, Indonesia, Nigeria, South Africa and Turkey.

Recorded by the European Space Agency’s Planck satellite, the image is a heat map of the cosmos as it appeared only 370,000 years after the Big Bang, showing space speckled with faint spots from which galaxies would grow over billions of years.

is in stunning agreement with the general view of the universe that has emerged over the past 20 years, of a cosmos dominated by mysterious dark energy that seems to be pushing space apart and the almost-as-mysterious dark matter that is pulling galaxies together. It also shows a universe that seems to have endured an explosive burp known as inflation, which was the dynamite in the Big Bang.

“The extraordinary quality of Planck’s portrait of the infant universe allows us to peel back its layers to the very foundations, revealing that our blueprint of the cosmos is far from complete.”

four Arabs who accepted an invitation for the holiday of Sukkot in the nearby Israeli settlement of Efrat on Thursday: The Palestinian Authority arrested them.

The invite from Oded Revivi, the Israeli mayor, was intended to promote peace

Can’t hurt to get to know the neighbors, can it?

Scientists have spent decades examining all the factors that can influence the rise of the seas, and their research is finally leading to answers. And the more the scientists learn, the more they perceive an enormous risk for the United States.

Much of the population and economy of the country is concentrated on the East Coast, which the accumulating scientific evidence suggests will be a global hot spot for a rising sea level over the coming century.

Because of their importance to navigation, they have been measured for the better part of two centuries. While the record is not perfect, scientists say it leaves no doubt that the world’s oceans are rising. The best calculation suggests that from 1880 to 2009, the global average sea level rose a little over eight inches.

Obesity is a touchy subject in the emirate. Data from the International Association for the Study of Obesity shows that Qatar has the highest obesity rates in the Mideast, and worse rates are mostly found only in a few South Pacific countries. Some 34 percent of Qatar’s men and 45 percent of its women are obese, defined as a body mass index of more than 30.

They are based on the emirate’s total population of about 1.9 million, but most of those are migrant workers. Qatari citizens number only about 250,000. Since most of the migrant workers are construction and other manual laborers, obesity rates among citizens are likely to be far higher than overall figures suggest.

Is it helpful, or journalistically ethical, to explore the worst-case scenarios of climate change, however unlikely they are? How much should a writer contextualize scary possibilities with information about how probable those outcomes are, however speculative those probabilities may be?

I also believe very firmly in the set of propositions that animated the project from the start:

that the public does not appreciate the scale of climate risk