Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Nearly 50% of the world's scientists are assigned to military projects.
71
Sound travels about 4 times faster in water than in air.
408
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
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The earth is approx. 6,588,000,000,000,000,000 tons.
175
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310