The force of a suction cup is calculated using F=AP.
15
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists in Germany have developed a candy that doesn't cause cavities.
11
In zero gravity, a candle's flame is round and blue.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The bark of an older redwood tree is fireproof.
65