Clash of the Americas
- Episode aired Feb 2011
- TV-PG
- 45m
National Geographic joins a quest to discover how evolutionary history changed forever when animals from North and South America came face to face for the first time.National Geographic joins a quest to discover how evolutionary history changed forever when animals from North and South America came face to face for the first time.National Geographic joins a quest to discover how evolutionary history changed forever when animals from North and South America came face to face for the first time.