Most living mammals are small. Because smaller animals were less likely to survive the researchers’ simulated preservation ...

Humans need new antibiotics. This fact isn't in dispute. The question of how we find them, however, is much harder to answer. The idea that a minor infection could morph into an unstoppable, deadly ...

John B. Calhoun's mice had unlimited food, no predators and space to spare. Their population still collapsed into castes and died out — here's what it proves.

Scientists long wrote off the aye-aye as a solitary oddity, a nocturnal Madagascan primate with rodent teeth and a taste for ...

A dramatic new interpretation of thylacine anatomy has discovered that the extinct Tasmanian tiger killed prey more like a ...

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Learn why a bank vole may hold clues as to how some animals can adapt and survive as climate change shifts habitats and food ...

These early mammals looked like shrews do today. They were small and had a long body, eyes typical for nocturnal mammals and ...

The Tasmanian tiger hunted more like a fox than its fearsome namesake, according to a new UniSC biomechanics study of ...

Resurrected lactoferricin peptides show how a few amino-acid changes transformed an ancient immune defense.

About 200 million years ago, furry, little egg-laying creatures evolved the ability to feed their offspring with a secretion from special glands: milk. Their evolutionary journey continued, and by ...

How Daniel Quinn's novel 'Ishmael' and Todd McFarlane's dark animation brought the Pearl Jam song 'Do the Evolution' to life.