Progressives should know the disinformers' most commonly used arguments - and how to answer them crisply. Those arguments have been repeated so many times by the fossil-fuel-funded disinformation campaign that almost everyone has heard them - and that means you'll have to deal with them in almost any setting, from a public talk to a dinner party.
...Physicist John Cook has done us a great service by posting good one-line responses and then updating them as the science evolves and as people offer better ways of phrasing. Below I have reposted the top 99 with links to the science. You can find even more here. Everybody should know the first 20 or so.For instance, if somebody raises the standard talking point (#1 on the list) that the “climate’s changed before,” you can say, “Climate reacts to whatever forces it to change at the time; humans are now the dominant forcing.”
All the one liners here