Algorithms are designed to make medicine more accurate. But when race is factored in, they can worsen inequality. NOVA is available to stream on pbs.org and the free PBS App, available on iPhone, ...

Black holes get a bad rap. They’ve been cast as the monsters of the cosmos — gobbling up stars and stretching anything that gets too close into cosmic spaghetti. But Black Hole expert Janna Levin has ...

(This program is no longer available for online streaming.) On September 11, 2001, an unimaginable horror unfolded that devastated a nation and the world. Fifteen years later, we are still gripped by ...