Dinosaurs are remembered as Earth’s giants: towering sauropods that outweighed dozens of elephants, and predators such as Tyrannosaurus rex that...

The dodo may have experienced the world in ways that were far more complex than its familiar image as a...

Earth’s climate may not always change as gradually as a thermostat being turned up or down. Instead, the planet can...

LAWRENCE, Kansas — A newly described fossil primate from Wyoming is forcing scientists to rethink how some of North America’s...

A revolution in animal evolution may have been driven by one of nature’s least glamorous products: fossilized feces. An international...

Qinghai Lake, China’s largest saline lake, continues to capture atmospheric carbon even when its surface is sealed beneath winter ice,...

A tiny snail discovered in a cave in southwestern China has become the first freshwater cave snail ever recorded within...

Green hydrogen has long been promoted as a key component of a low-carbon energy system, but its expansion has been...

Smithsonian researchers have reconstructed the most comprehensive evolutionary map yet of Hawaii’s honeycreepers, a spectacular group of birds whose rapid...

For decades, the bonnethead shark’s distinctive shovel-shaped head has raised a deceptively simple question: why do males and females develop...