Detroit found out the Kocks dirty secret first. Now south Chicago knows. What happens in Alberta doesn’t stay in Alberta. Petcoke, the dirty high carbon residue of Canadian tar sands refining, fouled Detroit. Detroit ordered the petcoke piles out. Now petcoke piles are covering south Chicago with black dust laced with toxic vanadium. Petcoke, the tar sands residue that is worse for the climate than burning coal, has been piled up near midwest refineries awaiting export to countries that allow it to be burned. Because it’s a waste product of oil refining the Kochs sell it for prices cheaper than coal to poor nations willing the accept pollution as a trade off for cheap energy. Petcoke is the carbon cost ignored in the State department analysis that falsely claimed that Keystone XL tar sands oil will not significantly increase greenhouse gas pollution compared with conventional oil. The dirty carbon secret that the Kochs don’t want you to know about is literally blowing in the wind. Working class and lower middle class communities were, as usual, the first to learn the Koch’s dirty secret.