There are already many bacteria (and fungi) that can break down plastics. http://science.howstuffworks.com/environmental/green-science/bacteria-landfill1.htm ht

There are already many bacteria (and fungi) that can break down plastics. http://science.howstuffworks.com/environmental/green-science/bacteria-landfill1.htm http://science.howstuffworks.com/environmental/green-science...