If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
It's still possible to see the division between East and West Germany due to different light bulbs.
5
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Australia's Great Barrier Reef is 1,250 miles long!
45
One cubic mile of seawater contains about 50 pounds of gold.
79
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56