Scientists detected the gravitational waves after a pair of unusual black holes collided.
A sheet of ice, twice the size of Manhattan, broke of from a glacier in Greenland this week.
The new iceberg measures 46 square miles. In 2010, the Petermann Glacier lost chunk of ice measuring 96 square miles. The loss of glacier mass in Greenland, which has seen warming temperatures, has scientists concerned.
Robin Young and Jeremy Hobson are hitting the road. Our Tumblr brings you behind the scenes of our election coverage.