Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Sound travels fifteen times faster through steel than through air.
134
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
Out of all the senses, smell is most closely linked to memory.
146
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A ball of glass will bounce higher than a ball made of rubber.
73