By the way, I'd just like to mention that I am far happier to be arguing
about the comparative benefits of nuclear power, wind, solar, geothermal, biomass, conservation,
efficiency, reforestation, organic agriculture, etc. for quickly reducing CO2 emissions and concentrations, than to be engaged in yet another
argument with someone who doesn't believe that CO2 is a greenhouse gas, or that human activities are not causing warming, or that the Earth is cooling, or thinks that AGW is a «liberal» conspiracy to destroy capitalism, etc..
To be sure, these activists sometimes deployed ecology but it was always a relatively minor part of the larger struggle (environmentalists fighting pollution in the early 20th century typically made
arguments about public health or
efficiency, they did not rely on ecology).