Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Aluminum used to be more valuable than gold!
84
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Nylon is made from coal and petroleum.
42