Scientists aren't sure what color dinosaurs were.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Pure water (H2O) does not conduct electricity on its own.
46
A cubic yard of air weighs about 2 pounds at sea level.
31
Pumice is the only rock that floats on water.
14