Optical illusions occur when what the eyes see conflicts with what the brain expects.
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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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Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
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In zero gravity, a candle's flame is round and blue.
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If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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Sound travels about 4 times faster in water than in air.
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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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