Commentator-comic Bill Maher plays devil’s advocate with religion as he talks to believers about their faith. Traveling around the world, ...

Bill Nye is retiring his kid show act in a bid to become more like his late professor, astronomer Carl Sagan. Sagan dreamed of launching a ...

Sleepless in America exposes the crucial need for sleep and the shocking life-threatening consequences of its absence.

Exclusive access into the career and life of the public servant who has advised seven U.S. presidents beginning with the AIDS pandemic in the ...