Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
153
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The United States consumes 25% of all the world's energy.
51
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Sweden is so good at recycling, it has run out of garbage and now must import garbage from Norway to fuel its energy programs.
20