Sound travels about 4 times faster in water than in air.
408
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
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
Aluminum used to be more valuable than gold!
84
Nylon is made from coal and petroleum.
42
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
