It's still possible to see the division between East and West Germany due to different light bulbs.
5
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 Niagara Falls moves upstream at an average rate of about 295ft a century!
48
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Even Antarctica has an area code. It's 672.
58