In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
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Scientists are now able to grow 'beating' heart tissue in a lab!
162
Iron weighs more after it rusts.
16
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
The sun is 330,330 times larger than the earth.
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Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9