In the first-of-its kind, save-the-world experiment, NASA is about to clobber a small, harmless asteroid millions of miles away.A spacecraft named Dart will ...

Secretary-General Antonio Guterres delivered his “state of the world” speech at Tuesday’s opening of the annual high-level global gathering. U.N. spokesman Stephane Dujarric said it would be “a sober, substantive and solutions-focused report card” for a w...

A new NASA report says that the seat restraints, suits and helmets of the doomed crew of the space shuttle Columbia didn't work well, leading to 'lethal trauma' as the out-of-control ship broke apart, killing all seven astronauts. (Dec. 30)