The author and activist discusses the intersection of religious faith and environmentalism.

In these clips from interviews with Bill Moyers, Seeger discusses dissent, environmentalism and his hope for a better world.

In the conclusion of Bill's conversation with Neil deGrasse Tyson, the astrophysicist talks about why science literacy is critical to the future of our democracy, economy and standing in the world.

Watch clips from part two of Bill's interview with the astrophysicist and host of the new Cosmos: A Spacetime Odyssey, airing this spring.

Clips from Bill's conversations with scientists Jane Goodall, Sir John Houghton and the late Isaac Asimov, who shared their views on the intersection between religion and science.

In-depth interviews with a range of guests including theoretical physicists and Vatican Observatory astronomers from the award-winning public radio program On Being.

The percentage of Republicans that believe humans evolved over time has dropped significantly in the past four years.

Clip: In this clip, astrophysicist Neil deGrasse Tyson says that the only thing that should be taught in science class is science.

In this clip, the acclaimed astrophysicist tells us why, when he looks up at the night sky, he feels large and connected to the universe.

North Carolina, long considered the South's most moderate state, has taken a hard right turn, but Moral Mondays protesters are fighting back. Is this where American politics is heading? Also on the show, the paint industry is ordered to clean up its mess.