Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The water of the Antarctica is so cold that nothing can rot there.
334
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The Caspian Sea is also classed as the world's largest lake.
52
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Every year, Alaska has about 5,000 earthquakes.
31