The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One 75-watt bulb gives more light than three 25-watt bulbs.
57
A ball of glass will bounce higher than a ball made of rubber.
73
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
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
Pumice is the only rock that floats on water.
14