A universe that continually expands has long been the dominant cosmological framework. But a universe that undergoes cycles of expansion and contraction, perhaps for all time, has recently been analyzed …

Sean Carroll, best-selling author and professor of physics and philosophy, joins Brian Greene for a wide-ranging conversation spanning the quantum to the cosmos–teeing up their live event in NYC on …

Have you ever spent hours looking for something you just know is there, only to be doubted? In 1987, most astronomers thought there was nothing in the outer solar system, …

Can marching ants, schooling fish, and herding wildebeests teach us something about the morning commute? Robert Krulwich guides this unique melding of mathematics, physics, and behavioral science as Mitchell Joachim, Anna Nagurney and Iain Couzin examine the creative and sometimes counter intuitive solutions to one of the modern world’s most annoying problems.

Not long ago, the idea of a computer beating a human at chess was the stuff of science fiction. But some of the most creative programmers of the 1980s and 90s were determined to make it a reality. And they did.

Meet roboticist Heather Knight and explore the interactive robotic experiences she has created, which include a giant Rube Goldberg machine and a wise-cracking robot, Data, who performs a stand-up comedy …