Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Out of all the senses, smell is most closely linked to memory.
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Billions of neutrinos pass unnoticed through your body every second.
6
Most dust particles in your house come from dead skin.
48
Aluminum used to be more valuable than gold!
84
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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