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scientists have been monitoring the dwindling population of right whales in the North Atlantic.

the animals’ lengths have declined by roughly 7 percent since 1981

“We saw 5 and even 10-year-old whales that were about the size of 2-year-old whales,” Dr. Stewart said. In one case, an 11-year-old whale was the same size as a 1½-year-old whale.

Entanglement in fishing gear is an ever-present threat for the mammals and one of the primary drivers of their decline.

Whales who don’t drown or starve right away will often drag gear for several years.

“What we think is going on here is that dragging these big trailing heaps of gear is creating all this extra drag, which takes energy to pull around, and that’s energy that they would probably otherwise be devoting to growth,

​Smaller right whales are less resilient to climate change as they do not have the nutritional buffer they need to adapt during lean food years,”

the species can hardly afford declines in its birthrate.

“this population has recovered from very small numbers before, so it’s not completely grim.

“If we all were to demand these management changes of our elected officials the situation would change dramatically.”

But older females who have more offspring, and thus share more of the group’s genes, are more likely to cooperate by sharing food and knowledge.

She believes the primary reason women live so long after menopause is because they help improve the survival of grandchildren, which helps pass their own genes on.

To him, that’s where reproductive conflict comes in. “You have to not only look at the gains, but the costs you would suffer if you continue to breed.”

There are plenty of theories, of course, especially regarding why: increasingly complex social networks, a culture built around tool use and collaboration, the challenge of adapting to a mercurial and often harsh climate

Although these possibilities are fascinating, they are extremely difficult to test.

Although it makes up only 2 percent of body weight, the human brain consumes a whopping 20 percent of the body’s total energy at rest. In contrast, the chimpanzee brain needs only half that.

contrary to long-standing assumptions, larger mammalian brains do not always have more neurons, and the ones they do have are not always distributed in the same way.

The human brain has 86 billion neurons in all: 69 billion in the cerebellum, a dense lump at the back of the brain that helps orchestrate basic bodily functions and movement; 16 billion in the cerebral cortex, the brain’s thick corona and the seat of our most sophisticated mental talents, such as self-awareness, language, problem solving and abstract thought; and 1 billion in the brain stem and its extensions into the core of the brain

In contrast, the elephant brain, which is three times the size of our own, has 251 billion neurons in its cerebellum, which helps manage a giant, versatile trunk, and only 5.6 billion in its cortex

primates evolved a way to pack far more neurons into the cerebral cortex than other mammals did

The great apes are tiny compared to elephants and whales, yet their cortices are far denser: Orangutans and gorillas have 9 billion cortical neurons, and chimps have 6 billion. Of all the great apes, we have the largest brains, so we come out on top with our 16 billion neurons in the cortex.

“What kinds of mutations occurred, and what did they do? We’re starting to get answers and a deeper appreciation for just how complicated this process was.”

there was a strong evolutionary pressure to modify the human regulatory regions in a way that sapped energy from muscle and channeled it to the brain.

Accounting for body size and weight, the chimps and macaques were twice as strong as the humans. It’s not entirely clear why, but it is possible that our primate cousins get more power out of their muscles than we get out of ours because they feed their muscles more energy. “Compared to other primates, we lost muscle power in favor of sparing energy for our brains,” Bozek said. “It doesn’t mean that our muscles are inherently weaker. We might just have a different metabolism.

a pioneering experiment. Not only were they going to identify relevant genetic mutations from our brain’s evolutionary past, they were also going to weave those mutations into the genomes of lab mice and observe the consequences.

Silver and Wray introduced the chimpanzee copy of HARE5 into one group of mice and the human edition into a separate group. They then observed how the embryonic mice brains grew.

After nine days of development, mice embryos begin to form a cortex, the outer wrinkly layer of the brain associated with the most sophisticated mental talents. On day 10, the human version of HARE5 was much more active in the budding mice brains than the chimp copy, ultimately producing a brain that was 12 percent larger

“It wasn’t just a couple mutations and—bam!—you get a bigger brain. As we learn more about the changes between human and chimp brains, we realize there will be lots and lots of genes involved, each contributing a piece to that. The door is now open to get in there and really start understanding. The brain is modified in so many subtle and nonobvious ways.”

As recent research on whale and elephant brains makes clear, size is not everything, but it certainly counts for something. The reason we have so many more cortical neurons than our great-ape cousins is not that we have denser brains, but rather that we evolved ways to support brains that are large enough to accommodate all those extra cells.

There’s a danger, though, in becoming too enamored with our own big heads. Yes, a large brain packed with neurons is essential to what we consider high intelligence. But it’s not sufficient

No matter how large the human brain grew, or how much energy we lavished upon it, it would have been useless without the right body. Three particularly crucial adaptations worked in tandem with our burgeoning brain to dramatically increase our overall intelligence: bipedalism, which freed up our hands for tool making, fire building and hunting; manual dexterity surpassing that of any other animal; and a vocal tract that allowed us to speak and sing.

Human intelligence, then, cannot be traced to a single organ, no matter how large; it emerged from a serendipitous confluence of adaptations throughout the body. Despite our ongoing obsession with the size of our noggins, the fact is that our intelligence has always been so much bigger than our brain.

The architect who designed the sculpture, Maarten Struijs, told Dutch broadcaster RTL he was pleased that it likely saved the life of the driver.

plastic

uninjured and there were no passengers on the train

Authorities launched an investigation into how the train could plow through the barrier at the end of the rail tracks.

The driver of a metro train escaped injury

The driver of a metro train escaped injury

was caught by a sculpture of a whale’s tail near the Dutch port city of Rotterdam.

perched upon one of two tail fins known as “flukes”

It seems there's an association between spending money on one's self and selfish conduct, and it doesn't require actual spending. In this 2009 paper Roy Y.J. Chua and Xi Zou, both professors of management, found that just getting people to think about that kind of spending was sufficient to make their decisions more selfish. The pair showed 87 university students pictures of shoes and watches and had them complete a survey about the products. Then they answered questions about how they would behave as a chief executive in each of three hypothetical business decisions. Half the group had seen pictures of simple, functional shoes and watches. The others had viewed, and then described, top-end luxury goods. Those who saw the luxury versions were significantly more likely to choose the selfish path in the business decisions. They were more inclined to OK the production of a car that would pollute the environment, the release of bug-riddled software, and the marketing of a videogame that would prompt kids to bash each other. That suggests, write Chua and Zou, that "mere exposure to luxury caused people to think more about themselves than others."

Empowered by their own sources of information and their own interpretations of research, doubters have declared war on the consensus of experts.

Our lives are permeated by science and technology as never before. For many of us this new world is wondrous, comfortable, and rich in rewards—but also more complicated and sometimes unnerving. We now face risks we can’t easily analyze.

The world crackles with real and imaginary hazards, and distinguishing the former from the latter isn’t easy.

In this bewildering world we have to decide what to believe and how to act on that. In principle that’s what science is for.

“Science is not a body of facts,” says geophysicist Marcia McNutt,

“Science is a method for deciding whether what we choose to believe has a basis in the laws of nature or not.”

The scientific method leads us to truths that are less than self-evident, often mind-blowing, and sometimes hard to swallow.

We don’t believe you.

Galileo was put on trial and forced to recant. Two centuries later Charles Darwin escaped that fate. But his idea that all life on Earth evolved from a primordial ancestor and that we humans are distant cousins of apes, whales, and even deep-sea mollusks is still a big ask for a lot of people. So is another 19th-century notion: that carbon dioxide, an invisible gas that we all exhale all the time and that makes up less than a tenth of one percent of the atmosphere, could be affecting Earth’s climate.

we intellectually accept these precepts of science, we subconsciously cling to our intuitions

Shtulman’s research indicates that as we become scientifically literate, we repress our naive beliefs but never eliminate them entirely. They lurk in our brains, chirping at us as we try to make sense of the world.

Most of us do that by relying on personal experience and anecdotes, on stories rather than statistics.

We have trouble digesting randomness; our brains crave pattern and meaning.

we can deceive ourselves.

Even for scientists, the scientific method is a hard discipline. Like the rest of us, they’re vulnerable to what they call confirmation bias—the tendency to look for and see only evidence that confirms what they already believe. But unlike the rest of us, they submit their ideas to formal peer review before publishing them

other scientists will try to reproduce them

Scientific results are always provisional, susceptible to being overturned by some future experiment or observation. Scientists rarely proclaim an absolute truth or absolute certainty. Uncertainty is inevitable at the frontiers of knowledge.

Many people in the United States—a far greater percentage than in other countries—retain doubts about that consensus or believe that climate activists are using the threat of global warming to attack the free market and industrial society generally.

news media give abundant attention to such mavericks, naysayers, professional controversialists, and table thumpers. The media would also have you believe that science is full of shocking discoveries made by lone geniuses

science tells us the truth rather than what we’d like the truth to be. Scientists can be as dogmatic as anyone else—but their dogma is always wilting in the hot glare of new research.

But industry PR, however misleading, isn’t enough to explain why only 40 percent of Americans, according to the most recent poll from the Pew Research Center, accept that human activity is the dominant cause of global warming.

“science communication problem,”

yielded abundant new research into how people decide what to believe—and why they so often don’t accept the scientific consensus.

higher literacy was associated with stronger views—at both ends of the spectrum. Science literacy promoted polarization on climate, not consensus. According to Kahan, that’s because people tend to use scientific knowledge to reinforce beliefs that have already been shaped by their worldview.

“egalitarian” and “communitarian” mind-set are generally suspicious of industry and apt to think it’s up to something dangerous that calls for government regulation; they’re likely to see the risks of climate change.

“hierarchical” and “individualistic” mind-set respect leaders of industry and don’t like government interfering in their affairs; they’re apt to reject warnings about climate change, because they know what accepting them could lead to—some kind of tax or regulation to limit emissions.

For a hierarchical individualist, Kahan says, it’s not irrational to reject established climate science: Accepting it wouldn’t change the world, but it might get him thrown out of his tribe.

Science appeals to our rational brain, but our beliefs are motivated largely by emotion, and the biggest motivation is remaining tight with our peers.

organizations funded in part by the fossil fuel industry have deliberately tried to undermine the public’s understanding of the scientific consensus by promoting a few skeptics.

Internet makes it easier than ever for climate skeptics and doubters of all kinds to find their own information and experts

Internet has democratized information, which is a good thing. But along with cable TV, it has made it possible to live in a “filter bubble” that lets in only the information with which you already agree.

How to convert climate skeptics? Throwing more facts at them doesn’t help.

people need to hear from believers they can trust, who share their fundamental values.

We believe in scientific ideas not because we have truly evaluated all the evidence but because we feel an affinity for the scientific community.

“Believing in evolution is just a description about you. It’s not an account of how you reason.”

evolution actually happened. Biology is incomprehensible without it. There aren’t really two sides to all these issues. Climate change is happening. Vaccines really do save lives. Being right does matter—and the science tribe has a long track record of getting things right in the end. Modern society is built on things it got right.

Doubting science also has consequences.

In the climate debate the consequences of doubt are likely global and enduring. In the U.S., climate change skeptics have achieved their fundamental goal of halting legislative action to combat global warming.

“That line between science communication and advocacy is very hard to step back from,”

It’s their very detachment, what you might call the cold-bloodedness of science, that makes science the killer app.

that need to fit in is so strong that local values and local opinions are always trumping science.

not a sin to change your mind when the evidence demands it.

for the best scientists, the truth is more important than the tribe.

Students come away thinking of science as a collection of facts, not a method.

Shtulman’s research has shown that even many college students don’t really understand what evidence is.

“Everybody should be questioning,” says McNutt. “That’s a hallmark of a scientist. But then they should use the scientific method, or trust people using the scientific method, to decide which way they fall on those questions.”

science has made us the dominant organisms,

incredibly rapid change, and it’s scary sometimes. It’s not all progress.

The cerebrum has two halves, or hemispheres, that are further divided into four regions, or lobes. The frontal lobes, located behind the forehead, are involved with speech, thought, learning, emotion, and movement.

Behind them are the parietal lobes, which process sensory information such as touch, temperature, and pain.

At the rear of the brain are the occipital lobes, dealing with vision

Lastly, there are the temporal lobes, near the temples, which are involved with hearing and memory.

The second-largest part of the brain is the cerebellum, which sits beneath the back of the cerebrum.

diencephalon, located in the core of the brain. A complex of structures roughly the size of an apricot, its two major sections are the thalamus and hypothalamus

The brain is extremely sensitive and delicate, and so it requires maximum protection, which is provided by the hard bone of the skull and three tough membranes called meninges.

Want more proof that the brain is extraordinary? Look no further than the blood-brain barrier.

This led scientists to learn that the brain has an ingenious, protective layer. Called the blood-brain barrier, it’s made up of special, tightly bound cells that together function as a kind of semi-permeable gate throughout most of the organ. It keeps the brain environment safe and stable by preventing some toxins, pathogens, and other harmful substances from entering the brain through the bloodstream, while simultaneously allowing oxygen and vital nutrients to pass through.

One in five Americans suffers from some form of neurological damage, a wide-ranging list that includes stroke, epilepsy, and cerebral palsy, as well as dementia.

Alzheimer’s disease, which is characterized in part by a gradual progression of short-term memory loss, disorientation, and mood swings, is the most common cause of dementia. It is the sixth leading cause of death in the United States

50 million people suffer from Alzheimer’s or some form of dementia. While there are a handful of drugs available to mitigate Alzheimer’s symptoms, there is no cure.

Unfortunately, negative attitudes toward people who suffer from mental illness are widespread. The stigma attached to mental illness can create feelings of shame, embarrassment, and rejection, causing many people to suffer in silence.

In the United States, where anxiety disorders are the most common forms of mental illness, only about 40 percent of sufferers receive treatment. Anxiety disorders often stem from abnormalities in the brain’s hippocampus and prefrontal cortex.

Attention-deficit/hyperactivity disorder, or ADHD, is a mental health condition that also affects adults but is far more often diagnosed in children.

ADHD is characterized by hyperactivity and an inability to stay focused.

Depression is another common mental health condition. It is the leading cause of disability worldwide and is often accompanied by anxiety. Depression can be marked by an array of symptoms, including persistent sadness, irritability, and changes in appetite.

The good news is that in general, anxiety and depression are highly treatable through various medications—which help the brain use certain chemicals more efficiently—and through forms of therapy

Other animals that experienced mass die-offs include sea lions, tufted puffins, and baleen whales. But none of them compared to the murres in scale.

The murres likely starved to death because the Blob caused more competition for fewer small prey. The warming increased the metabolism of predatory fish like salmon, cod, and halibut -- meaning they were eating more than usual. These fish eat the same small fish as the murres, and there simply wasn't enough to go around.

During the 2015 breeding season, three colonies didn't produce a single chick. That number went up to 12 colonies in the 2016 season -- and in reality it could be even higher, since researchers only monitor a quarter of all colonies.

It's especially rare to see a patch of warm ocean water over such a large area, but scientists say global climate change is making these phenomena more common. From 1982 to 2016, there was an 82% rise in the number of heat wave days on the global ocean surface, according to a 2018 study. That's because heat waves are increasing in both frequency and duration, with the highest level of maritime heat wave activity occurring in the North Atlantic

The aggressor in this war keeps trying to push back toward a past as it never happened, toward nonsensical and necrophiliac accounts of history. Russia must conquer Ukraine, Vladimir Putin says, because of a baptism a thousand years ago, or because of bloodshed during World War II.

The new word “рашизм” is a useful conceptualization of Putin’s worldview. Far more than Western analysts, Ukrainians have noticed the Russian tilt toward fascism in the last decade.

Undistracted by Putin’s operational deployment of genocide talk, they have seen fascist practices in Russia: the cults of the leader and of the dead, the corporatist state, the mythical past, the censorship, the conspiracy theories, the centralized propaganda and now the war of destruction

we have tended to overlook the central example of fascism’s revival, which is the Putin regime in the Russian Federation.

A bilingual nation like Ukraine is not just a collection of bilingual individuals; it is an unending set of encounters in which people habitually adjust the language they use to other people and new settings, manipulating language in ways that are foreign to monolingual nations

I have gone on Ukrainian television and radio, taken questions in Russian and answered them in Ukrainian, without anyone for a moment finding that switch worthy of mention.

Ukrainians change languages effortlessly — not just as situations change, but also to make situations change, sometimes in the middle of a sentence, or even in the middle of a word.

“Pашизм” is a word built up from the inside, from several languages, as a complex of puns and references that reveal a bilingual society thinking out its predicament and communicating to itself.

Putin’s ethnic imperialism insists that Ukrainians must be Russians because they speak Russian. They do — and they speak Ukrainian. But Ukrainian identity has as much to do with an ability to live between languages than it does with the use of any one of them

Those six Cyrillic letters contain references to Italian, Russian and English, all of which a mechanical, letter-by-letter transliteration would block

The best (if imperfect) way I have found to render “рашизм” from Ukrainian into English is “ruscism”

When we see “ruscism” we might guess this word has to do with Russia (“rus”), with politics (“ism”) and with the extreme right (“ascism”) — as, indeed, it does

I have had to spell “рашизм” as “ruscism” in English because we need “rus,” with a “u,” to see the reference to Russia. In losing the original Ukrainian “a,” though, we weaken a multilayered reference — because the “a” in “рашизм,” conveniently, allows the Ukrainian word to associate Russia and fascism in a way English cannot.

If you don’t know either language, you might think that Russian and Ukrainian are very similar. They are pretty close — much as, say, Spanish and Italian are.

the semantics are not that close

From a Russian perspective, the false friends are legion. There is an elegant four-syllable Ukrainian word that simply means “soon” or “without delay,” but to a Russian it sounds like “not behind the bar.” The Ukrainian word for “cat” sounds like the Russian for “whale,” while the Ukrainian for “female cats” sounds like Russian for “intestines.”

Russians do not understand Ukrainian, because they have not learned it. Ukrainians do understand Russian, because they have learned it.

Ukrainian soldiers often speak Russian, though they are instructed to use Ukrainian to spot infiltrators and spies. This is a drastic example of a general practice of code-switching.

Ukrainians are perfectly capable of writing Russian correctly, but during the war some internet commentators have spelled the occasional Russian word using the Ukrainian writing system, leaving it looking unmoored and pitiable. Writing in Ukrainian, you might spell “oсвобождение” as “aсвобaждениe,” the way it is pronounced — a bit of lexicographic alchemy that makes it (and, by extension, Russians) look silly, and mocks the political concepts being used to justify a war. In a larger sense, such efforts are a means of displacing Russia from its central position in regional culture.