And as you continue to breathe, air hardens the mucus into a solid booger, a gooey prison cell ... The next time you feel the urge to mine for green gold, just grab a tissue.

In the final phase of boogerfication, the mucus, dirt, and other junk dry up and clump together, forming the nasal classic-- the booger.

A lot of people think yellow or green snot means you need an antibiotic. That is not true. Laura Martin, MD, MPH If it's a viral infection causing the yellow or green snot, yellow in particular is ...