The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
The bark of an older redwood tree is fireproof.
65
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Each day, up to 150 species of life become extinct.
-23
One barrel of petroleum holds 42 gallons.
20
