The earth is approx. 6,588,000,000,000,000,000 tons.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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A single speck of dust is half way in size between a subatomic particle and the Earth.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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