Forest fires move faster uphill than downhill.
52
Europe is the only continent without a desert.
62
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
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
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55