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
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
One cubic mile of seawater contains about 50 pounds of gold.
79
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The average ice berg weighs 20,000,000 tons!
54
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
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 Sahara desert expands at about 1km per month.
90