A cubic yard of air weighs about 2 pounds at sea level.
31
Out of all the senses, smell is most closely linked to memory.
146
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Scientists are now able to grow 'beating' heart tissue in a lab!
162
For every gallon of sea water, you get more than a quarter pound of salt.
45
The bark of an older redwood tree is fireproof.
65