Water, electricity, and gas has been free in Turkmenistan since 1991.
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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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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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