10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The Caspian Sea is also classed as the world's largest lake.
52
The average ice berg weighs 20,000,000 tons!
54
Forest fires move faster uphill than downhill.
52
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
In 1850, only 8% of the people in California were women.
0
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Sahara desert expands at about 1km per month.
90