Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Out of all the senses, smell is most closely linked to memory.
146
The force of a suction cup is calculated using F=AP.
15
Nylon is made from coal and petroleum.
42
Balsa wood is classified as a hard wood!
41
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Scientists aren't sure what color dinosaurs were.
312
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7