Reptiles Swam

What happened to the dinosaurs and other ancient animals that roamed the Earth alongside them is a question that has fascinated scientists for centuries. While experts have solid theories for some of the most major extinction events in Earth's history (an asteroid hitting the planet about 65 million years ago is a popular scapegoat, for instance), ...

Plesiosaurs, marine reptiles that thrived in the world's seas when dinosaurs ruled the land, swam much like penguins by using their flippers to "fly" underwater, scientists said on Thursday, resolving a debate that began nearly two centuries ago.

What happened to the dinosaurs and other ancient animals that roamed the Earth alongside them is a question that has fascinated scientists for centuries. While experts have solid theories for some of the most major extinction events in Earth's history (an asteroid hitting the planet about 65 million years ago is a popular scapegoat, for instance), ...

Plesiosaurs, marine reptiles that thrived in the world's seas when dinosaurs ruled the land, swam much like penguins by using their flippers to "fly" underwater, scientists said on Thursday, resolving a debate that began nearly two centuries ago.