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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
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A cow produces around 200,000 glasses of milk in her lifetime.
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