Scientists detected the gravitational waves after a pair of unusual black holes collided.
Next week, President Obama will journey to the tiny town of Moneygall, where his great great great grandfather once lived. The BBC’s Marsk Simpson reports that the town’s 298 residents are busy preparing for the president’s visit.
Report by Here & Now’s Alex Ashlock
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.