Everyone knows dinosaurs got really big. Some of the long-necked plant-eaters were the largest land animals ever on Earth, as shown by Argentinosaurus, perhaps 70 to 90 tons and upward of 30 meters ...

Exceptionally large numbers of severely ill sea lions and fur seals are coming ashore along the California coastline, forcing rescue dispatchers to triage response efforts.

Hidden in the rainforest canopy of Southeast Asia, one of the largest spiders on Earth has spent over a century confounding ...

A new Library of Congress collection features the full Stony Brook WTC Health and Wellness Program oral history project that ...

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.

A new study challenges traditional human evolution classifications, suggesting ancient relatives may belong to a broader ...

Spiders may seem to be the scariest household invaders, but maybe they aren't after all. These are just some of the reasons ...

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 ...

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

Scientists discovered that more than 500 species of vesper bats possess two separate sets of antibody genes, an immune ...

The platypus is already an animal that seems assembled from spare parts: a duck-like bill, a beaver-like tail, webbed feet, dense waterproof fur, and eggs where most mammals produce live young. Less ...

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