Aluminum used to be more valuable than gold!
84
German chemists made a replica of a trophy the size of one molecule.
68
Pumice is the only rock that floats on water.
14
The average temperature at 40,000 feet above sea level is -60 F.
56
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
If the chemical sodium is dropped into water it will immediately and violently explode.
67
The bark of an older redwood tree is fireproof.
65
A 'jiffy' is an actual unit of time for 1/100th of a second!
66