Bestselling author Dan Brown joins physicist Brian Greene for a fascinating conversation on reality, religion, and the future of AI—just as Brown’s newest book The Secret of Secrets hits shelves. …

What happens when a black hole a billion times more massive than our sun powers a star-like object? It’s a quasar of a question. These massive and extremely remote celestial …

In recent years, machines have grown increasingly capable of listening, communicating, and learning—transforming the way they collaborate with us, and significantly impacting our economy, health, and daily routines. Who, or what, are these thinking machines? As we teach them to become more sophisticated, how will they complement our lives?

How fast is the universe expanding? Two prominent approaches are finding different answers, propelling cosmology toward a crisis. Wendy Freedman, a renowned astronomer who has spent decades seeking the expansion …

Imagine a job creating interactive games that help people learn and communicate better. Meet technologist Katherine Isbister who does just that. Episode filmed live at the 2013 World Science Festival …

A second doesn’t always feel like a second—time can seem to slow down if you’re riding a death-defying roller coaster, or speed up while you’re having a night out on the town. But just what’s going on inside our heads to skew our perception of time?