Environmental and ecological discussion, particularly of things like weather and other natural phenomena (especially if they're not breaking news).
See also our Nature and Gardening community for discussion centered around things like hiking, animals in their natural habitat, and gardening (urban or rural).
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
Someone I'm close with ran their EV company on diesel fuel this year. Tesla uses grid power. I'd say even the most ambitious projects have been a scam in green energy.
Hell in the US you can buy and sell solar energy credits from companies that actually have solar usage, which then allows you to make claims about how green your company is.