I refer to you, the following link:
Ed Dolan comments on Gernot Wagner’s Book, ‘But Will the Planet Notice?’
Briefly, economists can apply statistical distributions to analyze global phenomenon like ‘climate change’ and suggest corrective course of action; they can measure genetic variance to decide on which endangered species to focus on; can reinforce technically that no matter how difficult a goal is, it is achievable if market (mechanism) supports it.
Basically, pay for what you get – be it the ‘self-proclaimed’ right to pollute!
I particularly like the last proposition, which I can use to convince the polluters, which is technically the ‘There ain’t no such thing like a free lunch’ (TANSTAAFL) principle.