Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
German chemists made a replica of a trophy the size of one molecule.
68
Liquid TIDE laundry detergent glows under a blacklight.
96
Most dust particles in your house come from dead skin.
48