Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
According to studies, men change their minds two to three times more often than women.
72
The only letter not appearing on the Periodic Table is the letter "J".
180
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound at the right vibration can bore holes through a solid object.
134
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Brass doorknobs automatically disinfect themselves in about 8 hours.
18