The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The bark of an older redwood tree is fireproof.
65
One barrel of petroleum holds 42 gallons.
20
Pure water (H2O) does not conduct electricity on its own.
46
No matter how cold it gets, gasoline will not freeze.
107
Aluminum used to be more valuable than gold!
84
Your brain is 80% water.
525
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116