I don't think that atmospheric Co2 had been viewed as directly toxic to human health before, has it?https://www.theguardian.com/commentisfr ... nvironment
A Co2 atmospheric concentration of 1000ppm will be reached by 2100, on current trends. This concentration of Co2 has an effect of reducing cognitive brain function by 21%! Such concentrations are already found in urban environments right now, most tragically in inner city schools. Also, bedrooms have recorded C02 levels of 2000ppm. Which might be one reason to explain why many people feel so groggy first thing in the morning.
Just when we collectively need to understand and act on pollution and climate change, it turns out that our ability to clearly think these things through is being retarded by these pollutants
So that explains Trump then