Nutrient deficiencies in rice grown under higher carbon dioxide
This is why I'm a proponent of genetically modified organisms in agriculture. The world needs to be fed and needs to be fed properly, and it is pure privilege to deny use of tools in our toolbox that abet solutions to global hunger. I won't deny the issues around the corporatization of farmland, vendor/seed lock-in and IP issues, and the litany of other issues around its use - but damn is it a viable solution for vitamin deficiency and a way forward through changing environments.