The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The state with the longest coastline in the Continental U.S. is Michigan.
31
The water of the Antarctica is so cold that nothing can rot there.
334
More than 25% of the world's forests are in Siberia.
51
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
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