The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Your thumb is about the same size as your nose.
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