Astronomer Jill Tarter leads the charge to search for intelligent life on other planets by listening to clues from over 40 radio telescopes. Episode filmed live at the 2010 World …

Brian Greene sits down with theoretical physicist Rafael Bousso to explore some of the deepest puzzles in modern physics. Their conversation centers on the black hole information paradox, one of …

Can conscious self-awareness be coded in an algorithm? According to distinguished computer scientist Lenore Blum and Turing Award Laureate Manuel Blum the answer is “yes,” and they join Brian Greene …

Though many animals display cooperative behavior, human cooperation is distinct. Alan Alda hosts E.O. Wilson, Sarah Hrdy and other leading evolutionary biologists, anthropologists and humanitarians as they examine the origins and evolution of human cooperative behavior.

For the last half century we have slipped the surly bonds of earth with landers, rovers and spacecraft that have allowed us to touch the very edge of the Solar …

In celebration of the 100th anniversary of Einstein’s general theory of relativity, we examine its essential insights, its lingering questions, the latest work it has sparked, and the allied fields of research that have resulted.