The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
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
Sound travels fifteen times faster through steel than through air.
134
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A cesium atom in an atomic clock beats over nine billion times a second.
43
The only letter not appearing on the Periodic Table is the letter "J".
180
