I'll give it a stab: > climate change Implement a high carbon tax/fee, and companies are now willing to spend money to reduce their carbon footprint, as long

I'll give it a stab: > climate change Implement a high carbon tax/fee, and companies are now willing to spend money to reduce their carbon footprint, as long as the cost to reduce is less than the tax (so the tax has to high enough). For the geoengineering case, you can simply to the same thing, in reverse: offer money for carbon capture. Both of these create an opportunity for new businesses and jobs, since companies usually don't have the climate related expertise in house. > housing crisis From what I see, the incentives are already there to build more housing, but the government (and those who already live there!) in many jurisdictions puts up as many barriers as possible to prevent people from actually acting on those incentives. The solution, then, is to convince the government and those who live there to allow people to build (there's already a long line of organizations, both for-profit and non-profit, who'd gladly start build tomorrow if they could). As dougmwne mentioned, both of these ultimately require political action. I'm not aware of what organizations are advocating for a carbon tax, but in the case of housing, YIMBY does some good work.