For every gallon of sea water, you get more than a quarter pound of salt.
45
Diamonds can be shattered with a hammer.
-104
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
The average home creates more pollution than does the average car.
33
Nylon is made from coal and petroleum.
42
In zero gravity, a candle's flame is round and blue.
16
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116