In zero gravity, a candle's flame is round and blue.
16
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The average temperature at 40,000 feet above sea level is -60 F.
56
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
Scientists are now able to grow 'beating' heart tissue in a lab!
162
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Sound at the right vibration can bore holes through a solid object.
134