One cubic foot of gold weighs more than 1,200 pounds!
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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
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
12
Sound at the right vibration can bore holes through a solid object.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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