Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Pumice is the only rock that floats on water.
14
The earth is approx. 6,588,000,000,000,000,000 tons.
175