Earth was hit by another huge asteroid at the same time as the one that wiped out dinosaurs, vast crater suggests
The new crater, nicknamed Nadir, appears to have been caused by something that would be comparably destructive on its own
Dinosaur footprints from more than 100 million years ago were accidentally discovered by customer eating at a restaurant in China
The footprints belonged to two dinosaurs that roamed the Sichuan province, paleontologists discovered
Megalodon sharks ruled the oceans millions of years ago: Why did they go extinct?
New analyses of giant fossilized teeth are helping scientists unravel the mystery of their extinction