Your brain is 80% water.
525
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Hot water can freeze faster than cold water.
181
Sound travels fifteen times faster through steel than through air.
134
A ball of glass will bounce higher than a ball made of rubber.
73
Pumice is the only rock that floats on water.
14
Out of all the senses, smell is most closely linked to memory.
146
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61