Camp Century was built to store nukes beneath Greenland's ice. See photos of the underground, "Star Wars"-like site.

It was reported that Germany won the match 3-2. The British High Command ... on both sides returned to life in the trenches. There are even more World War One resources over on BBC Teach.

(See how World War I energized mapmaking at National Geographic.) Photographed in 1917, an endless line of Russian soldiers sit patiently in a trench as they anticipate a German attack. National ...