We don't even know if we
can make a significant difference in the grand scheme of things.
Alternative, sustainable, energy sources, is a no brainer to me. Not for climate change, for the self centered, take care of us, fuck them foreigners, national security. If it helps prevent climate change, that's a plus.
All the other stuff, I want to see cost/benefit before I'm onboard. For the people living on an island 2 ft above sea level, its a fuck of a lot cheaper to move them to the penthouse of any Hilton, than some of the proposals I've seen.