Scientists detected the gravitational waves after a pair of unusual black holes collided.
Journalists Anthony Shadid, Stephen Farrell, Tyler Hicks, and Lynsey Addario went missing on Tuesday while reporting on the events in Libya, a country that the Committee to Protect Journalists is calling the most dangerous in the world for journalists right now.
We talk to Mohamed Abdel-Dayem, the Committee’s Program Director for the Middle East and North Africa, who just returned from the region.
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.