Professor Peter C. Mancall from the University of Southern California provides an explanation for how North America was settled before European Colonization. [1:47]

[Free Registration/Login Required] Hear Adam Rome discuss his book, Earth Day 1970: The Teach-In That Made the Green Generation, which addresses the reform movement of protecting the environment. The first formal Earth Day took place in...

[Free Registration/Login Required] Yale University's David Brion Davis presents a lecture focused on how slavery came to be in the early development of the New World and goes on to cover how it falls apart. [49:48]