Biology

U.S. regulators will consider clinical trials of a system that mimics the womb, which could reduce deaths and disability for babies born extremely preterm

Caterpillars can’t regulate their body temperatures, so they have to come up with a totally different strategy to make it through the coldest months of the year.

A honeybee swarm has as much electric charge as a thundercloud, and the insects’ mass movements in the atmosphere might even have some influence on the weather.

A newly described fossil is as old as the “first bird,” Archaeopteryx, and represents a birdlike dinosaur that might have specialized in running or wading instead of flying

Often nicknamed “making biscuits,” kneading is a good sign that your cat is happy, experts say

A new technique for analyzing modern genetic data suggests that prehumans survived in a group of only 1,280 individuals

A “Darwinian paradox” is that homosexual activity occurs even though it does not lead to or aid in reproduction. But if you visit three capuchin monkeys in Los Angeles, they’ll show you how beneficial their liaisons are.

A striking purple species is one piece of the fungal kingdom’s uncharted diversity

New research hints at how sauropod dinosaurs got to be so gargantuan

Here’s how newfound “spicy” birds resist their potent neurotoxin

Understanding the ancient past is critical to responding to challenges we face in the future

Does the prevalence of same-sex encounters in a group of Puerto Rican monkeys enhance their ability to pass along their genes?