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The "extraordinary book [that's] about a basic fact of biology" is part of the "one last thing of utmost importance I feel compelled to teach," Bezos wrote, adding the following excerpt: "Staving off death is a thing that you have to work at. Left to itself – and that is what it is when it dies – the body tends to revert to a state of equilibrium with its environment ... Our bodies, for instance, are usually hotter than our surroundings, and in cold climates they have to work hard to maintain the differential. When we die the work stops.... ...[I]f living things didn't work actively to pr...

Crocodiles evolved in a way called punctuated equilibrium, with tandem short- and long-lived species. The same may be true of other “living fossil” species around the world. It’s been 200 million years, but crocodiles haven’t aged a day. You love badass beasts. So do we. Let's nerd out over them together. In a new paper, scientists from the U.K. explain how this notorious “living fossil” has kept its rugged good looks since the heyday of the dinosaurs. In the study, the researchers used “advanced evolutionary modeling” to show why some animals have stayed exactly the same sin...

lot of the time, including through the cold and difficult winter months. Today, we know that hibernating animals walk a very fine line of preparation and subsistence, building fat stores and activating biological triggers to lower body temperature and metabolism. But while modern humans have technology that staves off nutritional diseases, for example, our prehistoric ancestors had no such luck. ZZZZZ It’s in these absences, which leave physical marks on the human skeleton, that researchers have found their clues. Here’s just part of the laundry list of self evident health conditions...

New AI research shows that a major cornerstone of evolutionary theory could be totally wrong. By analyzing species data, the algorithm found die-outs and flourishing aren't usually linked. There are way more "top 5 percent" population events than we might have realized. Scientists have new evidence that Earth’s many periodic mass extinctions follow a cycle of about 27 million years, connecting the five major mass extinctions with more minor ones occurring throughout Earth’s life-fostering timespan. The artificial intelligence analysis could also shift how evolutionary scientists think abo...