Tens of millions of years ago, a diverse array of bird species soared, swam, and thrived amid their scaly reptile cousins—and ...

A surprising fossil find shows that some mosasaurs lived in ancient rivers as oceans changed near the end of the Cretaceous.

Jurassic Park—and its never-ending sequels and spinoffs—starts with a basic premise: extracting the DNA of long-dead ...

Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater ...

For more than half a billion years, evolution has run amok in our world’s oceans and created some truly bizarre creatures. From the soft-bodied, alien lookalikes of the Cambrian to the murderous ...

David Mendosa called it the wall of fat. In 1994, a doctor diagnosed him with type 2 diabetes, and over the next decade, he felt helpless as his weight crept upward until he tipped the scales at 312 ...

During this race, it’s quite possible one might witness a record-setting endurance cyclist riding alongside someone in their golden years. It’s a wide demographic that participates in the Lael Wilcox ...

This article originally appeared on Inside Climate News, a nonprofit, non-partisan news organization that covers climate, energy and the environment. Sign up for their newsletter here. Gila monsters ...

Gila monsters are shrouded in mystery. The venomous, desert-dwelling lizards spend most of their lives underground and out of sight, only coming up to the surface occasionally to hunt for food, bask ...

Kostensuchus atrox – life restauration, 3 meters long. Credit: Gabriel Diaz Yanten, CC-BY 4.0 Seventy million years ago, in the wetlands of prehistoric Patagonia, a terrifying predator prowled ...

A creature the size of a raccoon once roamed Utah and the West, featuring armored plates that made it look fierce. Think giant relatives of the modern Gila monster. The lizard’s remains were recently ...