Sound travels about 4 times faster in water than in air.
408
The average temperature at 40,000 feet above sea level is -60 F.
56
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Aluminum used to be more valuable than gold!
84
Most dust particles in your house are made from dead skin!
67