Pumice is the only rock that floats on water.
14
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
One ragweed plant can release as many as one billion grains of pollen!
51
Nearly 50% of the world's scientists are assigned to military projects.
71
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
One cubic foot of gold weighs more than 1,200 pounds!
78
Sound travels about 4 times faster in water than in air.
408
Neanderthal man had a brain capacity 100cc larger than modern man's.
50