stop trying to make alot of money. its really that simple

Could you give examples, I don't consider auxiliary workers to be really part of an industry (like non-specialist janitors aren't part of the satellite sector, say). Other than those roles I don't see how you can flit between industries chasing an ethical posting.

Let's say I'd like to work in environmental science .. what role can I walk into?

perfect example- i do data vis for carbon emissions on volunteer basis. there are lots of oppotunities like that that you could probably get paid a bit to do. email proffs working on cool projects and see if they need some cheap tech help. i repair and sell used electronics on ebay to make some money