In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
4.5 pounds of sunlight strike the Earth each day.
27
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3