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.

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 …

The James Webb Space Telescope’s dazzling images are providing new insights into comet science, our neighboring planets, and how water may have arrived here on Earth. Brian Greene in live …

Forget what you think you know about dark matter. After a 30-year search for a single, as yet unidentified, species of dark matter particle that would make up some 25% of the mass of the universe, physicists are starting to consider novel explanations.

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 …

2020 Nobel Laureate in Physics Andrea Ghez talks with Brian Greene about the details of the long journey to discovering a supermassive black hole in the center of our galaxy …