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 …

There are many types of telescopes used in astronomy, but X-ray telescopes offer a view of the cosmos that reveal just how much of a living ecosystem the universe is. …

“Because it’s there” was George Mallory’s famous explanation for why he risked (and lost) his life trying to become the first person to summit Everest. We don’t all want to …

The experimental successes of quantum mechanics are astounding, yet the theory still has towering mysteries regarding the essence of quantum reality. Philosopher David Albert joins Brian Greene to explore the …

What’s it like to face a faceless world? Acclaimed neurologist Oliver Sacks once apologized for almost bumping into a large bearded man, only to realize he was speaking to a mirror.

Leading cosmologist Matias Zaldarriaga, joins Brian Greene to explore the stunning insights — and the remaining mysteries — of modern cosmological thought. This program is part of the Big Ideas …