Israel's Dead Sea is 1,312 feet below sea level.
48
Mexico City is built on top of an underground resevoir!
47
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181