For every gallon of sea water, you get more than a quarter pound of salt.
45
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Pure water (H2O) does not conduct electricity on its own.
46
A cubic yard of air weighs about 2 pounds at sea level.
31
The bark of an older redwood tree is fireproof.
65