Researchers have dated the mysterious skull from Petralona Cave in Greece to 300,000 years ago and concluded that the fossil belonged to an ancient human group that lived alongside Neanderthals.

In this excerpt from "The Story of Birds", author Steve Brusatte explores the moment where paleontologists realized they had critical evidence to show birds came from dinosaurs — a fluffy…

Early Earth may not have had the right ingredients for life — until a nearby Mars-size planet crashed into it, two new studies hint.