Generally, via Pigovian taxes that internalize the externality consistently without creating additional distortions or utilizing arbitrary ad-hoc regulation — ideally in a revenue-neutral way via dividends.
See, for example, the Trent Lott-John Breaux group announced this week to push for the Baker-Shultz carbon dividend plan (supported by economists including former CEA chairs Greg Mankiw and Martin Feldstein and Fed chairs Ben Bernanke and Janet Yellen).
(It should be noted that the Clean Air Act and the formation of the EPA came under Richard Nixon, of all people.)
[0] Americans for Carbon Dividends (new group, political): http://www.afcd.org
[1] Climate Leadership Council (old group, academic): https://www.clcouncil.org
[2] AFCD Article: https://www.nytimes.com/2018/06/19/climate/carbon-tax-climat...
[3] This year's op-ed on AFCD: https://www.nytimes.com/2018/06/20/opinion/climate-change-fe...
[4] Last year's op-ed on CLC (economists): https://www.nytimes.com/2017/02/08/opinion/a-conservative-ca...
[5] Last year's op-ed on CLC (politicians): https://www.wsj.com/articles/a-conservative-answer-to-climat...
To put it another way, if you’re a single-issue voter in favor of Pigouvian taxes on greenhouse gas emissions, you’re probably better off voting straight-line Democrat than straight-line Republican. If it were a question of whether to implement a Pigouvian tax or, say, subsidies for wind and solar, that would be a different story (and there’s a decent chance that I’d vote Republican).
In the meantime, how many trillions of dollars will we spend to address relatively immediate impacts such as flooding in coastal regions and changes in growth patterns for crops? And how many trillions of dollars will we add to the cost of reversing climate change's effects - if it's even possible to reverse them at all? Not to mention non-economic consequences like the disruption of marine ecosystems.
[0] https://news.gallup.com/poll/168620/one-four-solidly-skeptic...
As personal profit and selfishness takes a greater precedence than the wellbeing of the public, the commons must suffer tragedy.
Hope the mods split it off.
There is indeed a performative aspect to a broad discussion, but it offers the advantage of raising broad based issues that just might not occur to an individual in a limited closed session.
While HN is not immune to the cons of online communities, I feel a generally civil tone, free of political snark, or heavy biases can be maintained.