NASA Knows: The Ozone Hole

Earth (ESD) NASA Knows: The Ozone Hole This is the story of the hole in Earth’s protective ozone layer: what it is, how it formed, and the decades-long effort to repair it. Featured Video Why is there an ozone hole?  Ozone 101 shows the ABCs of CFCs and the...

No Exit From El Fasher

Fault Lines and Lighthouse investigate the siege of Sudan’s el-Fasher, where civilians were trapped, starved and killed.For 18 months, civilians in Sudan’s el-Fasher were trapped under siege as the paramilitary Rapid Support Forces surrounded the western city, cutting...