The IMF recently published this study:

http://blog-imfdirect.imf.org/2015/0...bsidy-problem/

calculating the "subsidies" of the global carbon industry and other environmental pollutions. They pile up to more than 5,3 Trillion each year!

Richard Heinberg here:

http://www.resilience.org/stories/20...s-a-half-truth

states correctly: the word "subsidies" in the title suppses that if we want to act, we simply remove these "subsidies".
The real term for these "costs" is externalised costs but that is a word economists do not want to hear...