Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Cows can sleep standing up, but they can only dream lying down.
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A cow produces around 200,000 glasses of milk in her lifetime.
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Your body is creating and killing about 2.4 million red blood cells per second.
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There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
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