(this was posted as a subcomment, but deserves to be a top-level comment) Another explanation/hypothesis which is rarely talked about is rising CO₂ levels: htt

(this was posted as a subcomment, but deserves to be a top-level comment) Another explanation/hypothesis which is rarely talked about is rising CO₂ levels: https://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511 https://www.politico.com/agenda/story/2017/09/13/food-nutrie... This even goes so far as harvesting CO₂ from the atmosphere and indiscriminately feeding it to greenhouse crops, while we know that many plant varieties will respond by having far less available nutrients for human consumption.