Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
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
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Billions of neutrinos pass unnoticed through your body every second.
6
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17