10% faster growth could easily mean 10% fewer nutrients per kilo of food. "We know unequivocally that when you grow food at elevated CO2 levels in fields, it b

10% faster growth could easily mean 10% fewer nutrients per kilo of food. "We know unequivocally that when you grow food at elevated CO2 levels in fields, it becomes less nutritious" https://www.scientificamerican.com/article/ask-the-experts-does-rising-co2-benefit-plants1/ https://www.scientificamerican.com/article/ask-the-experts-d... Rising CO2 means reducing performance for humans and other animals. Not a huge problem if you're an agricultural worker working fields near sea level. For those in offices, cities and especially at higher elevations it's simply going to increase the chances of problematic concentrations.