A quarter moon is visible in this oblique view of Earth's horizon and airglow, recorded with a digital still camera on the final mission of the Space Shuttle Columbia. Columbia's crew was killed on Feb. 1, 2003 when the shuttle broke up on re-entry into Earth's atmosphere.
When Swiss engineers completed drilling the Gotthard Base Tunnel Friday, they were lauded for finishing the world’s longest tunnel – but actually it's only the world's longest rail tunnel. Read on to find out what underground structures take the honors for being the longest.
A new federal rule will prohibit airlines from keeping passengers on the tarmac for more than three hours.
The national debt is worrying to conservatives and liberals alike. The question? What to do about it.
France's first couple breeze past centuries of British-French antagonism on two-day state visit.