The effective altruism movement should be worth checking out. They're focused on finding the most cost-effective options for charitable giving. They mainly tar

The effective altruism movement should be worth checking out. They're focused on finding the most cost-effective options for charitable giving. They mainly target other cause areas in which they expect marginal donations to do more good, but their general approach is very useful to understand even if you have a narrower goal. There is general information about the approach here: https://www.effectivealtruism.org/ https://www.effectivealtruism.org/ And an analysis of climate change in particular here: https://www.givingwhatwecan.org/research/other-causes/climate-change/ https://www.givingwhatwecan.org/research/other-causes/climat... https://www.givingwhatwecan.org/post/2013/11/less-burn-for-your-buck-part-ii/ https://www.givingwhatwecan.org/post/2013/11/less-burn-for-y... evaluates a few specific charities that attempt to reduce greenhouse gases.