Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A cubic yard of air weighs about 2 pounds at sea level.
31
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 most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Aluminum used to be more valuable than gold!
84
Pumice is the only rock that floats on water.
14