It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Israel's Dead Sea is 1,312 feet below sea level.
48
The Sahara desert expands at about 1km per month.
90
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 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
It's still possible to see the division between East and West Germany due to different light bulbs.
5