Turning trash into clean, green cash: It's a gas?

Don't just burn it

Interesting piece on GreenTech covering some highlights of the AlwaysOn GoingGreen East
Conference. In particular, how can trash be cost-effectively turned into clean green energy?

Most companies heading down this path have failed thus far, however, new companies, such as Ze-Gen are focusing on various types of gasification and syngas as the way to reap some green by turning trash into clean energy.