Iron weighs more after it rusts.
16
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
At room temperature, the average air molecule travels at the speed of a rifle bullet.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
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
A cubic yard of air weighs about 2 pounds at sea level.
31
Scientists are now able to grow 'beating' heart tissue in a lab!
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