Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Australia's Great Barrier Reef is 1,250 miles long!
45
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Even Antarctica has an area code. It's 672.
58
One cubic mile of seawater contains about 50 pounds of gold.
79
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Every year, Alaska has about 5,000 earthquakes.
31