I was wondering the other week why plastic-eating bacteria havn't evolved yet. After all, bacteria are supposed to be very quick at adaptation and an energy-rich resource lying around, floating in the oceans and being a pollution problem should be a golden opportunity.

Obviously I am missing something here because of my ignorance in biology. But people seem to be working on it: http://science.sciencemag.org/content/351/6278/1162.1