The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Scientists in Germany have developed a candy that doesn't cause cavities.
11
The average home creates more pollution than does the average car.
33
For every gallon of sea water, you get more than a quarter pound of salt.
45
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
The bark of an older redwood tree is fireproof.
65
Hot water can freeze faster than cold water.
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Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
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