For all that these people can be ridiculed by simply quoting them, their successes are really alarming. The consensus that CO2 emissions threaten the climate is

For all that these people can be ridiculed by simply quoting them, their successes are really alarming. The consensus that CO2 emissions threaten the climate is something more than 20 years old at this point (the first IPCC report is from 1992), so the absence of political consensus on the issue is a significant achievement. In comparison, the Freon ban to protect the ozone took little more than ten years (in fairness the Montreal Protocol is the most successful treaty the UN has produced).