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 most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Neanderthal man had a brain capacity 100cc larger than modern man's.
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Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
If the chemical sodium is dropped into water it will immediately and violently explode.
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One cubic foot of gold weighs more than 1,200 pounds!
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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