Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
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
Sound travels fifteen times faster through steel than through air.
134
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A cesium atom in an atomic clock beats over nine billion times a second.
43
Research indicates that plants grow healthier when they are stroked.
173
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18