Can trash be turned into cash

Can you make money off recycling?

OK, I'm not talking about saving your beer cans, although considering how many people fight for my beer cans on trash day, that might not be a bad idea!

Anyway, CNBC has been focusing on a number of companies going green by turning trash into cash. For example, Copart, Inc recycles cars. On the other hand, Waste Management isn't just finding "higher margins and higher returns on capital" by turning trash into methane, which saves millions of barrels of oil, but the company is hoping to create an "environmental closed-loop methane-to-diesel program" where all garbage trucks would be powered by the trash they pick up.

More green investing.