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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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Your body is creating and killing about 2.4 million red blood cells per second.
17
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16