Aluminum used to be more valuable than gold!
84
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Research indicates that plants grow healthier when they are stroked.
173
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
One cubic foot of gold weighs more than 1,200 pounds!
78
The bark of an older redwood tree is fireproof.
65