Welcome to Edgeryders, Alex. (And big thanks to @Anu for making the connection!)
I understand that every community has its own very own style and vision, but you’ll find elements of both entrepreneuring and caring about sustainability also here in Edgeryders. As food for thought, and as an example of what you can find here about these topics:
Personally, I have thought a lot about sustainability, and arrived at this bottom-up vision for a solution. As everything else, this is a purely grassroots / DIY solution, and for that reason also does not start from top-down imposed sustainability goals such as those proposed by the UN (though I acknowledge what they are trying to do in the hierarchical top-down society out there). Specifically for entrepreneuring, I also wrote “Fifty-eight new business ideas for Nepal”.
(On another note, in case you hit the limits of running your online community as a Facebook group, we might be able to help.)