Insufficient Sol? SOL!Solar panels. But if you don’t have the acreage, your sol!
Honestly, most problems that people deal with are 'political' in nature, where 'political' doesn't mean partisan politics, but the reality that we need _collective_ action and that means convincing other people what action should be taken. Even if we all agreed on the facts it would be hard to come to consensus on best action, and right now with many subjects it is hard to even come to agreement on the background facts.