Tens of thousands of years of cultures and communities figuring things out, some of which we could probably document...

Tens of thousands of years of cultures and communities figuring things out, some of which we could probably document with science, if we bothered. Who knows? We might even learn something to our benefit.

http://www.npr.org/sections/thesalt/2017/08/21/544191316/to-get-calcium-navajos-burn-juniper-branches-to-eat-the-ash
http://www.npr.org/sections/thesalt/2017/08/21/544191316/to-get-calcium-navajos-burn-juniper-branches-to-eat-the-ash