Instructional Video7:55
PBS

How a Mass Extinction Event Created the Amazon

12th - Higher Ed
The Amazon rainforest of South America is a paradise for flowering plants. But long ago, the landscape that we now think of as the Amazon looked very different. And would you believe that the entire revolution of the Amazon began with...
Instructional Video1:11
Next Animation Studio

Archeologists document first use of maize as food in Mesoamerica: study

12th - Higher Ed
Archeologists may have found out when cave-dwelling prehistoric Mesoamericans began eating maize as a staple, according to a new study in Science Advances.