Daily Archives: February 11, 2016

Ask Smithsonian: Why Do We Kiss?

By Alicia Ault smithsonian.com February 8, 2016 Love snuggling up to a sweetie and smooching? That’s romantic, but—spoiler alert—kissing can be a disgusting and dangerous activity. While kissing, couples exchange 9 milliliters of water, 0.7 milligrams of protein, 0.18 mg … Continue reading

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