7 Discoveries Scientists Made by Licking Things

You probably know not to lick something unfamiliar. But there are actually a surprising number of discoveries that have been made because scientists licked things.

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Sources:
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https://www.nature.com/articles/nature12127.epdf?referrer_access_token=3dITCYYZoDCID_rdak1xx9RgN0jAjWel9jnR3ZoTv0N1aiQbudzlXgR9YQ8YwjwgPvDaT_vLsREYFVAUXBvgmJ3QhMtF7Sj2tCKzH-SM0eGe2wp3fwolap8LiuPqoHIbDXp4UXbJ8dlUvbAF2T3BJPr_2xb0yLGAympUducrLKXJiQ_VQzXxC8vnwesEF-jbRbWwoKJyBbMpP_5-EVpfi2vFjZeG2TcmuHV_7lUFSlNdh8G3FFMxXBLFMDtubxgb&tracking_referrer=www.cnn.com
https://www.livescience.com/32028-oldest-water-found-underground.html
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https://twitter.com/mikamckinnon/status/1030860663667740673?lang=en
https://voices.pomona.edu/2013/11/on-the-merits-of-licking-rocks/
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https://www.nature.com/articles/nature12127.epdf?referrer_access_token=3dITCYYZoDCID_rdak1xx9RgN0jAjWel9jnR3ZoTv0N1aiQbudzlXgR9YQ8YwjwgPvDaT_vLsREYFVAUXBvgmJ3QhMtF7Sj2tCKzH-SM0eGe2wp3fwolap8LiuPqoHIbDXp4UXbJ8dlUvbAF2T3BJPr_2xb0yLGAympUducrLKXJiQ_VQzXxC8vnwesEF-jbRbWwoKJyBbMpP_5-EVpfi2vFjZeG2TcmuHV_7lUFSlNdh8G3FFMxXBLFMDtubxgb&tracking_referrer=www.cnn.com
http://www.artsci.utoronto.ca/main/itn/barbara-sherwood-lollar-taste-ancient-water

https://www.youtube.com/watch?v=BL6ehwqaawU