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.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Brass doorknobs automatically disinfect themselves in about 8 hours.
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Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
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Out of all the senses, smell is most closely linked to memory.
146
Diamonds can be shattered with a hammer.
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Sound travels about 4 times faster in water than in air.
408
The smell of freshly cut grass is actually a plant distress call.
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