A ball of glass will bounce higher than a ball made of rubber.
73
4.5 pounds of sunlight strike the Earth each day.
27
A cubic yard of air weighs about 2 pounds at sea level.
31
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One ragweed plant can release as many as one billion grains of pollen!
51