Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists are now able to grow 'beating' heart tissue in a lab!
162
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
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Nylon is made from coal and petroleum.
42
Iron weighs more after it rusts.
68