The average temperature at 40,000 feet above sea level is -60 F.
56
One barrel of petroleum holds 42 gallons.
20
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
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
Scientists aren't sure what color dinosaurs were.
312
Out of all the senses, smell is most closely linked to memory.
146
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