I’d guess because it is primarily natural and that the climate has always changed, and it has been much warmer during several warm periods during the Holocene. Silly me. Here’s Commander William Riker* David Roberts at Grist
One reason for the widespread misunderstanding is that climate change has been culturally coded as an “environmental problem.†This has been, in all sorts of ways, a disaster. Lots of pundits, especially brain-dead “centrist†pundits, have simply transferred their framing and conception of environmental problems to climate. They approach it as just another air pollution problem.
Hey, maybe he’s finally coming around. One of the things that has bothered me for a long time about ‘Climate Change’, beyond using that highly political term instead of anthropogenic global warming, is that the Warmists have folded every and any environmental issue under the banner of AGW, distracting from the real issue and shifting the focus, making it difficult to solve. It’s one of the reasons I moved from being a Warmist to a climate realist.
The first difference is that carbon dioxide is not like other pollutants.
He’s not saying it isn’t a pollutant, just that it’s different. CO2 is not a pollutant. Period. It’s a trace gas necessary for life.
The second difference is that climate change is irreversible.
True, because the climate will always change. Of course, we know that’s not what David means. In essence, he and other climate astrologers are saying that it is too late, so people have to be forced by Government to change their lives in manners that Warmists have so far refused for themselves in order to limit future temperature rise to less than 2 degrees Celsius.
*go to the Grist link and look at the caricature of Roberts to understand the joke.
GAWD!