Hot water can freeze faster than cold water.
181
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One barrel of petroleum holds 42 gallons.
20
Pumice is the only rock that floats on water.
14
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44