Scientists are now able to grow 'beating' heart tissue in a lab!
162
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
According to studies, men change their minds two to three times more often than women.
72
In zero gravity, a candle's flame is round and blue.
16
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
One ragweed plant can release as many as one billion grains of pollen!
51
No matter how cold it gets, gasoline will not freeze.
107
Sound travels about 4 times faster in water than in air.
408