That's why we have Republican congressional leaders saying things like people can't change the climate only God can (Inhofe), that sea level rise is caused by rocks falling into the ocean, and that increasing atmospheric CO2 levels are the result of more people exhaling.
Short of one of Murdoch's children changing the Fox line, only losing elections will change this behavior.
For a long time (1980s-2000s for sure), major fossil fuel companies and other extraction industries -- famously ExxonMobil and Koch Industries (https://en.wikipedia.org/wiki/ExxonMobil_climate_change_cont...), but quite a bit of others as well, have spent a lot of time funding and backing climate change denialism. The extraction industries tended to align to the Republican side, so these scientifically unsound opinions have tended to trickle up through conservative think tanks (eg Heartland Institute) and eventually down to the populist outlets (like Fox News and Rush Limbaugh and the like).
It does seem like that some of the oil companies are kind of weakly coming around to the fact that climate change is not something you can simply misinformation away. Maybe the lawsuits against extraction companies (https://www.theguardian.com/environment/2018/mar/20/can-clim...) are helping here. Regardless, it is not nearly enough to me at the moment. This is the pipeline that needs to be shut off in order for the message to be clearer on the right wing side in America.
Unfortunately, the concept of climate change denial has taken hold on the "conspiracy theory" side of American politic, so the concept is going to be floating around out there for a while (there are 18th century conspiracy theories still active after all). But what I'd hope to see if the extraction industry misinformation stops is that the more rational side of conservative American politics realize that this is a problem. Unlike most of Europe, it is difficult to think of many conservative politicians and personalities in the United States who are not denialists. (Arnold Schwarzenegger's one of the few I can think of immediately that is strongly convinced that climate change is a huge problem.)
That's my theory anyway.
And conspiracy theorists will have fodder for the next 50 years.
Tell them the magic elves demand doing your bidding? Because both things are on the same level of rationality? Civilization, as such, is in no danger.
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To OP: The problem will solve itself if the population of the world goes down enough, whether naturally or through some actual catastrophe. Indeed most of the world's birth rate is low enough that we are well on the way of a solution. Look up which parts of the world still have massive population growth and then see how many liberals you can get on board with trying to reduce that. Good luck.
1. Guardian: "President Obama has four years to save the Earth" (2009)
https://www.theguardian.com/environment/2009/jan/18/jim-hans...
Barack Obama has only four years to save the world. That is the stark assessment of Nasa scientist and leading climate expert Jim Hansen who last week warned only urgent action by the new president could halt the devastating climate change that now threatens Earth. Crucially, that action will have to be taken within Obama's first administration, he added.
2. The Independent: "Snowfalls are now a thing of the past" (2000)
According to Dr David Viner, a senior research scientist at the climatic research unit (CRU) of the University of East Anglia,within a few years winter snowfall will become “a very rare and exciting event”.
“Children just aren’t going to know what snow is,” he said.
https://wattsupwiththat.com/2015/11/12/one-of-the-longest-ru...
You can read more about the endlessly repeated warnings about "tipping points" that never come in this fairly partisan but well-researched blog article: https://wattsupwiththat.com/2018/10/08/the-ever-receding-cli...
Eventually we will have a Democrat President...get ready for a deafening wave of silence when that President does as little or maybe even less than our current one. Rest assured if that President is elected during a recession, putting people to work will override climate concerns.