10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Forest fires move faster uphill than downhill.
52
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
Israel's Dead Sea is 1,312 feet below sea level.
48
Mexico City is built on top of an underground resevoir!
47
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61