This. Visit Mumbai and tell one of the hundreds of million people that live on 50 cents a day to use their last ounce of energy to walk a piece of plastic to the trash can. I recycle gladly in California, but am realistic that problems at this scale MUST and WILL be solved by technology. Instead of finger wagging, readers of Hacker News may be the most qualified for building a machine that crawls dumpsites searching for plastic.