Billions of neutrinos pass unnoticed through your body every second.
6
Sound travels fifteen times faster through steel than through air.
134
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
A ball of glass will bounce higher than a ball made of rubber.
73