The average temperature at 40,000 feet above sea level is -60 F.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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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.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
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If the chemical sodium is dropped into water it will immediately and violently explode.
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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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