CO2 is at historically low levels, even at 420 ppm. We all go extinct at 150 ppm because plants can’t survive. Optimal CO2 level for plant growth is 1,000-1,300 ppm. The Earth is greener as a result of CO2 emissions, while temperature and sea level remain in a normal range out of the Little Ice Age May 10, 2023 1:41 pm
