I think we can and should be confident about the short-medium term negative effects of high CO2 on human civilization. You can always spread doubt about anythin

I think we can and should be confident about the short-medium term negative effects of high CO2 on human civilization. You can always spread doubt about anything that's long-term(say more than 2 decades) but it doesn't help to hope long-term it works, and short-term let it hurt as much as possible.