http://preciousplastic.com/videos/plastics/ http://preciousplastic.com/videos/plastics/ they have a section discussing different kinds of plastics, and simplif

http://preciousplastic.com/videos/plastics/ http://preciousplastic.com/videos/plastics/ they have a section discussing different kinds of plastics, and simplifies the information to the notion that if the plastic lacks a recycling symbol then it is in the category of 'unrecyclable'