Narrated by Tom Hanks, NBC's The Americas continues tonight with a new episode! Here's your preview/viewing guide for Ep. 6: ...

Torrent ducks have to survive freezing temperatures on land and extreme heat in the water. Learn all about it on The Americas.

The source (start) of the Amazon River is in the Andes Mountain range in Peru. It flows northwards through Brazil with its mouth taking water into the Atlantic Ocean. Piranhas have adapted to live ...