It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
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
Cold water weighs more than hot water.
93
Research indicates that plants grow healthier when they are stroked.
173
The average temperature at 40,000 feet above sea level is -60 F.
56
The storage capacity of human brain exceeds 4 Terrabytes.
140
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17