One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
A cesium atom in an atomic clock beats over nine billion times a second.
43
The bark of an older redwood tree is fireproof.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The force of a suction cup is calculated using F=AP.
15