At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Sound travels about 4 times faster in water than in air.
408
Balsa wood is classified as a hard wood!
41
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Scientists are now able to grow 'beating' heart tissue in a lab!
162