It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Even Antarctica has an area code. It's 672.
58
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
One cubic mile of seawater contains about 50 pounds of gold.
79