Aluminum used to be more valuable than gold!
84
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
In zero gravity, a candle's flame is round and blue.
16
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Scientists in Germany have developed a candy that doesn't cause cavities.
11
4.5 pounds of sunlight strike the Earth each day.
27
Brass doorknobs automatically disinfect themselves in about 8 hours.
18