More than two weeks after a helicopter and airplane collision over Washington killed 67 people, investigators have completed their work at the scene where the aircraft fell into the Potomac River ...

(THE CONVERSATION) Long before the current political divide over climate change, and even before the U.S. Civil War (1861-1865), an American scientist named Eunice Foote documented the underlying ...

André Corrêa do Lago, the newly appointed head of this year's United Nations climate conference, faces a tough road.

Extensive evidence, including global temperature and sea ice data, shows Earth's climate is changing due to human activity.

Several groups are working to preserve webpages, tools and data – some of which have already gone missing from government ...