The city of Houston, Texas is built on a swamp and is slowly sinking!
89
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
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
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