Scientists detected the gravitational waves after a pair of unusual black holes collided.
There are international investigators on the scene in Eastern Ukraine, where Malaysia Airlines Flight MH17 crashed last week. But there are also pro-Russian separatists in the fields where the jet went down, as well as volunteers — some of them walking up to reporters with wallets belonging to victims of the crash.
The BBC’s Olga Ivshina discusses the latest on the cleanup and investigation effort at the crash site with Here & Now’s Jeremy Hobson.
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.