In a desert, a mirage is caused when air near the ground is hotter than air higher up. As light from the Sun passes from cooler to warmer air, it speeds up and is refracted upward, creating the image of water.
63,000 square miles of Rainforests are being destroyed each year.
The six official languages of the U.N. are: English, French, Arabic, Chinese, Russian and Spanish.
Grenades were invented in China over 1,000 years ago.
Most Dinosaurs lived to be more than a hundred years old.
Sitting too close to the TV will not ruin your eyesight.
35,000 people in the U.S. will die from the flu annually.
About 1200 hotels can be found in London.
Squirrels can't remember where they hide half of their nuts.
Talking on the telephone is the leading cause of lightning injuries inside the home.