Study: Biodegradable plastics could worsen global warming | | The Bulletin

http://www.bendbulletin.com/article/20110803/NEWS0107/108030317

The study, led by NCSU doctoral student James Levis, found that biodegradable plastics can release large amounts of methane gas when they break down in landfills. Methane is one of the most problematic greenhouse gases, able to trap much more heat than carbon dioxide, making it a major contributor to global warming.