The average home creates more pollution than does the average car.
33
Scientists aren't sure what color dinosaurs were.
312
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Pure water (H2O) does not conduct electricity on its own.
46
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108