Peak Plastic is the idea that the supply of plastic (which is limited by oil, for the most part) will be less than the demand…and in all likelihood, this will happen within our generation. I came across an interesting view on this at BoingBoing…that is, when plastic prices get high enough, there may be value in digging up the vast amounts of plastic buried in landfills and recycling that. Mining raw materials, in essence. Since plastic takes a very, very long time to decompose, it’s not as far-fetched as it may sound. There are still advanced engineering plastics that need to be made from raw materials (polycarbonate, ultem, etc), but for many consumer applications, recycled commodity plastics may be perfectly suitable.