The Bombardier CRJ700 regional jet and Black Hawk helicopter both crashed into the icy Potomac River after colliding midair.

Sixty-seven people were believed to have died after an American Airlines jet and a U.S. Army helicopter collided and crashed into the Potomac River.

Ludmila Velikov trained Yevgenia Shishkova and Vadim Naumov when they were children and told Reuters the couple was like family to her.

Ancient Greece produced the earliest records of democracy, western philosophy — and, it turns out, lead pollution. Researchers studying sediment cores recovered from mainland ...

Scientists said they didn’t find evidence of life on Bennu, but they did find evidence of the building blocks of life.