I think yields are actually up, but overall nutrition is down https://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511 https://www.

I think yields are actually up, but overall nutrition is down 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...