High-tech search for 1968 plane wreck in Michigan's Lake Superior shows nothing so far
Solar storms may cause faint auroras overnight in parts of Northern Hemisphere
Cave discovery in France may explain why Neanderthals disappeared, scientists say
Four civilians on a daring SpaceX mission are attempting the first commercial spacewalk
Tech billionaire pulls off first private spacewalk high above Earth
A plan to extract gold from mining waste splits a Colorado town with a legacy of pollution
SpaceX-Polaris crew poised to attempt first private spacewalk
Polaris Dawn crew set for historic spacewalk Thursday
