Greece - Relationship atmospheric temperature and carbon dioxide

Earth's temperature is close to ideal. The concentration of carbon dioxide was near the lower limits for plant growth for a long time. A warming planet and use of fossil fuels has increased atmospheric CO2 concentration. The photo above from the Denver Botanic Gardens in 2016 shows the beautiful results. There is no man-made global warming crisis from use of fossil fuels. However, there is a man-made climate hoax crisis. John Shanahan, retired Professional Engineer.