Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
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
Your brain is 80% water.
525
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Diamonds can be shattered with a hammer.
-104
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108