Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
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Balsa wood is classified as a hard wood!
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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