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 spacecraft that could revolutionize…

Progeria is a rare, fatal genetic condition that causes accelerated aging in children; its young victims rarely live past 13. This moving documentary explores the remarkable world of Sam Berns…

Commentator-comic Bill Maher plays devil’s advocate with religion as he talks to believers about their faith. Traveling around the world, Maher examines the tenets of Christianity, Judaism and Islam and…