Wally Broecker divined how the climate could suddenly shift

It was the mid-1980s, at a meeting in Switzerland, when Wally Broecker’s ears perked up. Scientist Hans Oeschger was describing an ice core drilled at a military radar station in…

Social mingling shapes how orangutans issue warning calls

Human language, in its many current forms, may owe an evolutionary debt to our distant ape ancestors who sounded off in groups of scattered individuals. Wild orangutans’ social worlds mold…

How a virus turns caterpillars into zombies doomed to climb to their deaths

Higher and higher still, the cotton bollworm moth caterpillar climbs, its tiny body ceaselessly scaling leaf after leaf. Reaching the top of a plant, it will die, facilitating the spread…

Lost genes may help explain how vampire bats survive on blood alone

Surviving on blood alone is no picnic. But a handful of genetic tweaks may have helped vampire bats evolve to become the only mammal known to feed exclusively on the…

How I’ll decide when it’s time to ditch my mask

For weeks, I have been watching coronavirus cases drop across the United States. At the same time, cases were heading skyward in many places in Europe, Asia and Oceania. Those…

Here’s how boa constrictors squeeze their dinner without suffocating themselves

The boa constrictor’s choke hold is an iconic animal attack. By coiling around its prey, a snake can squeeze the life out of a victim in mere minutes before gulping…

Forests help reduce global warming in more ways than one

When it comes to cooling the planet, forests have more than one trick up their trees.   Tropical forests help cool the average global temperature by more than 1 degree…

Forests help reduce global warming in more ways than one

When it comes to cooling the planet, forests have more than one trick up their trees.   Tropical forests help cool the average global temperature by more than 1 degree…

Spinosaurus’ dense bones fuel debate over whether some dinosaurs could swim

A fierce group of predatory dinosaurs may have done much of their hunting in the water. An analysis of the bone density of several sharp-toothed spinosaurs suggests that several members…

Here’s the best timeline yet for the Milky Way’s big events

A new analysis of nearly a quarter million stars puts firm ages on the most momentous pages from our galaxy’s life story. Far grander than most of its neighbors, the…