Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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A cesium atom in an atomic clock beats over nine billion times a second.
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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.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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