This article says rising CO2 is making milkweed toxic, and as everyone knows we are killing milkweed (as "weed") - with a billion stems needed to fix the proble

This article says rising CO2 is making milkweed toxic, and as everyone knows we are killing milkweed (as "weed") - with a billion stems needed to fix the problem: https://relay.nationalgeographic.com/proxy/distribution/public/amp/animals/2018/12/monarch-butterflies-risk-extinction-climate-change https://relay.nationalgeographic.com/proxy/distribution/publ...