Forest fires move faster uphill than downhill.
52
It's still possible to see the division between East and West Germany due to different light bulbs.
5
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Mexico City is built on top of an underground resevoir!
47
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
The Sahara desert expands at about 1km per month.
90
Australia's Great Barrier Reef is 1,250 miles long!
45