The average temperature at 40,000 feet above sea level is -60 F.
56
Pure water (H2O) does not conduct electricity on its own.
46
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Hot water can freeze faster than cold water.
181
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Balsa wood is classified as a hard wood!
41
Iron weighs more after it rusts.
16
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16