An American Airlines plane with 64 people on board collided with an Army helicopter over Washington, D.C., and crashed into ...
Collisions like the one between an American Airlines plane and a helicopter over the Potomac River in D.C. this week have led to changes in the way we travel.
Archaeologists and climate scientists can now show that these ... Speleothem and Ice Cores: Natural Climate Archives Offer New Insights Into the Climate History of Central Europe Jan. 16 ...