Dinosaurs (02:51)
Go inside an Apatosaurus to learn how its behavior and body structure were able to support such a large animal.
Dinosaurs (01:05)
Find out how the Triceratops changed after millions of years iving on Earth.
Dinosaurs (02:29)
A Stegosaurus defends itself from its enemies in a unique way.
Ardipithecus (01:48)
As Tim White knows all too well, hunting fossils in the remote, trackless Afar region of Ethiopia is a daunting undertaking that pushes any scientific team to the limits.
Ardipithecus (02:26)
Back in the lab in Addis Ababa, Tim White demonstrates how "Ardi's" fragile bones must be painstakingly extracted from the hardened sediments that encase them.
Mega Beasts (03:10)
Mosasaurs duel with plesiosaurs for dominance in ancient Cretaceous seas.
Mega Beasts (01:59)
An ancient mega-shark is driven to extinction by an even greater predator.ATTENTION! We recently updated our privacy policy. The changes are effective as of September 10, 2008. To see the new policy, click here.
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