One ragweed plant can release as many as one billion grains of pollen!
51
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Your brain is 80% water.
525
A cubic yard of air weighs about 2 pounds at sea level.
31
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Scientists are now able to grow 'beating' heart tissue in a lab!
162