The earth is approx. 6,588,000,000,000,000,000 tons.
175
Pumice is the only rock that floats on water.
14
Aluminum used to be more valuable than gold!
84
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Balsa wood is classified as a hard wood!
41
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9