Each day, up to 150 species of life become extinct.
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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
German chemists made a replica of a trophy the size of one molecule.
68
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Sound travels fifteen times faster through steel than through air.
134
Balsa wood is classified as a hard wood!
41
Nylon is made from coal and petroleum.
42
One 75-watt bulb gives more light than three 25-watt bulbs.
57