For thousands of years, humans living high in the Argentinian Andes have relied on #drinkingwater that would make most people deathly ill, naturally occurring #arsenic in volcanic bedrock leaches into the groundwater, contaminating water with levels of toxic metalloid that would pose serious health risks.
But for one group in north #Argentina #naturalselection may have provided an unusual genetic advantage.
https://www.sciencealert.com/humans-in-the-andes-appear-to-have-evolved-a-strange-genetic-ability









