ecological economics

Um dos fundamentos da economia ecologica sao as externalidades. O protocolo de quioto internaliza algumas no caso do petroleo, mas sobra muita coisa em que e' preciso pensar (da viquipedia):

Concerning these externalities, Paul Hawken argues that the only reason why goods produced unsustainably are usually cheaper than goods produced sustainably is due to a hidden subsidy, paid by the non monetarised human environment, community or future generations[18].