The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
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
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
A cesium atom in an atomic clock beats over nine billion times a second.
43
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Sound travels fifteen times faster through steel than through air.
134
One cubic foot of gold weighs more than 1,200 pounds!
78