Education of the Mind: TIL that long ago, people chewed on tree bark as a method of pain relief. Willow bark has a high amount of salicylic acid, an ingredient still used in aspirin today.

Thursday, July 13, 2017

TIL that long ago, people chewed on tree bark as a method of pain relief. Willow bark has a high amount of salicylic acid, an ingredient still used in aspirin today.

http://ift.tt/2uWIYYm via /r/todayilearned http://ift.tt/2unSGGi

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