Neanderthal man had a brain capacity 100cc larger than modern man's.
50
One third of the electricity produced on earth is used to power electric light bulbs!
75
Aluminum used to be more valuable than gold!
84
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A cubic yard of air weighs about 2 pounds at sea level.
31
Pumice is the only rock that floats on water.
14
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21