Scientists have determined that the heat of the 1930s was caused by CO2 from burning fossil fuels.
Had these “scientists” actually looked at any data, they would have known that the heat of the 1930’s peaked at 310 PPM CO2, and the heat has declined as CO2 increased. There is no correlation between CO2 and heatwaves.
Climate science is a fact-free science run by scientific and mathematical illiterates.
Read more at Real Climate Science