The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Every year, Alaska has about 5,000 earthquakes.
31
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Australia's Great Barrier Reef is 1,250 miles long!
45