In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Pumice is the only rock that floats on water.
14
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.
13
Diamonds can be shattered with a hammer.
-104