Experts examine evidence that an early civilization in North America became extinct because of an asteroid impact during the last Ice Age. With no crater to examine, scientists test the theory that it exploded into a glacier.

Commentaires

Si vous aimez cette émission, vous aimerez sûrement celles-ci :

• Life On Earth: Attenborough's Greatest Adventure
• Dooky Chase Kitchen: Leah's Legacy
• Rick Steves' Europe