In zero gravity, a candle's flame is round and blue.
16
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Pure water (H2O) does not conduct electricity on its own.
46
The bark of an older redwood tree is fireproof.
65
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The average temperature at 40,000 feet above sea level is -60 F.
56