Could we turn the sun into a gigantic telescope?
Why are killer whale attacks on the rise? These scientists set sail to find out.
'Supermoon eclipse' will be visible across North America on Tuesday
SpaceX capsule splashes down after history-making Polaris Dawn mission
SpaceX Polaris Dawn mission is set to return home after history-making spacewalk
Polaris Dawn crew aims for early Sunday splashdown
SpaceX's private Polaris Dawn astronauts will return to Earth early Sunday. Here's how to watch live online
Puzzling fossil discovery could reveal why Neanderthals disappeared
