Pumice is the only rock that floats on water.
14
German chemists made a replica of a trophy the size of one molecule.
68
One cubic foot of gold weighs more than 1,200 pounds!
78
The smell of freshly cut grass is actually a plant distress call.
31
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15