Ronald Reagan National Airport is closed following a collision between an American Airlines plane and a military helicopter ...

Everything we know so far after horror mid-air incident in Washington DC - Authorities fear mass casualties as civil jet ...

Mads Petersen, owner of Greenland-based startup Arctic Unmanned, sat in a car to keep warm while he tested a small drone at minus 43 degrees Celsius (minus 45 degrees Fahrenheit). Read more at ...