Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
A journalist exposes the environmental, political, and economic issues behind the myth of cheap coal energy.
- Jeff Goodell A contributing editor at "Rolling Stone" and a frequent contributor to the "New York Times Magazine" as well as author of "Big Coal", " "Sunnyvale," and "The Cyberthief and the Samurai."
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