Sound travels fifteen times faster through steel than through air.
134
One third of the electricity produced on earth is used to power electric light bulbs!
75
Each day, up to 150 species of life become extinct.
-23
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
Nylon is made from coal and petroleum.
42
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One ragweed plant can release as many as one billion grains of pollen!
51