Out of all the senses, smell is most closely linked to memory.
146
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Pumice is the only rock that floats on water.
14
The bark of an older redwood tree is fireproof.
65
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A cesium atom in an atomic clock beats over nine billion times a second.
43
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
For every gallon of sea water, you get more than a quarter pound of salt.
45