Aluminum used to be more valuable than gold!
84
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Sound at the right vibration can bore holes through a solid object.
134
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
Iron weighs more after it rusts.
16