The average temperature at 40,000 feet above sea level is -60 F.
56
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The sun is 330,330 times larger than the earth.
75
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
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
The storage capacity of human brain exceeds 4 Terrabytes.
140