Most dust particles in your house are made from dead skin!
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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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One barrel of petroleum holds 42 gallons.
20
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A ball of glass will bounce higher than a ball made of rubber.
73
For every gallon of sea water, you get more than a quarter pound of salt.
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One ragweed plant can release as many as one billion grains of pollen!
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