Questions for Cool Jobs: Saliva offers a spitting image of our health

Lots of saliva helps contestants get good distance at Purdue University’s annual cricket-spitting contest in West Lafayette, Ind.
Rebecca McElhoe/Purdue University
Lots of saliva helps contestants get good distance at Purdue University’s annual cricket-spitting contest in West Lafayette, Ind.
Rebecca McElhoe/Purdue University
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