In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Nearly 50% of the world's scientists are assigned to military projects.
71
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The average home creates more pollution than does the average car.
33