Alan Alda has issued this year’s challenge to the world’s top scientists: What is sound? In an action-packed hour of interactive demonstrations, Alan and a team of communication experts invite the audience to explore what we hear, how we hear, and what that means for different species.

We’ve discovered thousands of exoplanets, but what about exomoons? Astronomer David Kipping joins Brian Greene to explore the ongoing search for exomoons—lesser-known, but intriguing potential habitats for life beyond Earth. …

In this year-end wrap up, Brian Greene discusses some of the major advances in science with a focus on breakthroughs in black hole physics and the key roles played by …

This video is part of our Brilliant Breakthroughs series: our new 20-episode mini-series exploring the “Eureka!” moments and proud accomplishments of the greatest scientific minds of our time. Join us …

Invention and innovation are the mark of robotics engineer Dennis Hong’s lab. Watch as he demonstrates some of the remarkable robots that his team has built. The robots walk on …

We’ve assembled an all-star group of ecologists, naturalists, and creative thinkers for an urgent but hopeful conversation about the environmental pressures bearing down on Earth’s rich spectrum of species.