Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The average temperature at 40,000 feet above sea level is -60 F.
56
Sound travels about 4 times faster in water than in air.
408
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Nearly 50% of the world's scientists are assigned to military projects.
71
Your brain is 80% water.
525
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16