Co2 is vital to life. But everything is a poison. It's just the dose that matters.

Finance reform.
Make accepting over $2K from any source a felony, and make it a state felony, not federal, so they go to PRISON, not club fed. We could totally do that here in Cali where the people can put bills on the ballot, but haven't.
Remove the financial incentive for spouting BS and most of it will stop (not all, there are a few true believers, but most are paid spokesmen doing it for the money.)
On another note, Oxygen is deadly in too high a dose. The right wing has 2 choices as I see it, they can either admit they are too dumb to understand that too much of anything is dangerous and/or deadly, or (more likely) admit they are simply disingenuous liars willing to say anything they are paid to say without ever even wondering what the 'truth' is. Neither is a good look.

Other interesting anti-science partisan issues are GMO/biotech, nuclear power, evolution, big bang, vaccines, AIDS, fracking, organic foods, vitamin supplements, and a host of others. Note that many of those are pegged in liberal circles as well, anti-science is a bipartisan issue, just depends on the issue.

This can't be understated. If we could see the same anti-science lash back for the anti-nuclear and anti-GMO crowds that'd be great. Too bad a lot of the most vehement and vocal climate change warnings come from folks also trying to 'educate' everyone about how terrible nuclear power and GMO crops are. After all the last thing we need are energy sources and seeds that radically reduce the amount of fossil fuels we burn each year.....