The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
More than 25% of the world's forests are in Siberia.
51
The state with the longest coastline in the Continental U.S. is Michigan.
31
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181