during the period 1940 to 1976 there was a cooling of the climate despite increasing co2 levels.
during the period 1940 to 1976 there was a cooling of the climate despite increasing co2 levels.
global cooling:3
by the 1970s, scientists were becoming increasingly aware that estimates of global temperatures showed cooling since 1945, as well as the possibility of large scale warming due to emissions of greenhouse gases.