When Continents Collide

  • 2011

The formation of the Isthmus of Panama, which connected Central and South America some 3.5 million years ago, and the role it played in shaping evolutionary history.

Where to Watch

Available to Stream

  • Watch on

Every Episode of Game of Thrones, Ranked

Find out which episode of the HBO hit reigns supreme.

Ranking Big Bang Theory's Guest Stars

From Stan Lee to Leonard Nimoy, check out the greatest cameos on the CBS sitcom

My News

Sign up and add shows to get the latest updates about your favorite shows - Start Now