Australia's Great Barrier Reef is 1,250 miles long!
45
One cubic mile of seawater contains about 50 pounds of gold.
79
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Mexico City is built on top of an underground resevoir!
47
The state of Florida is bigger than England!
74
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
It's still possible to see the division between East and West Germany due to different light bulbs.
5
Every year, Alaska has about 5,000 earthquakes.
31