One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Sound travels about 4 times faster in water than in air.
408
Nearly 50% of the world's scientists are assigned to military projects.
71
In zero gravity, a candle's flame is round and blue.
16
German chemists made a replica of a trophy the size of one molecule.
68
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
