Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The bark of an older redwood tree is fireproof.
65
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The storage capacity of human brain exceeds 4 Terrabytes.
140
German chemists made a replica of a trophy the size of one molecule.
68
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
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
Iron weighs more after it rusts.
16