If the chemical sodium is dropped into water it will immediately and violently explode.
67
The average temperature at 40,000 feet above sea level is -60 F.
56
Cold water weighs more than hot water.
93
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The bark of an older redwood tree is fireproof.
65
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20