The US Environmental Protection Agency’s (EPA) 5th AgSTAR National Conference solicits presentations in the following areas: carbon and renewable energy credits, co-digestion of livestock manures and other wastes, biogas processing and use, centralized systems, permitting issues, and operator experiences. Proposals for both oral and poster presentations will be considered. The event will be held in Green Bay, Wisconsin on 27-28 April 2010. Abstracts of no more than 300 words and a short bio must be submitted to Allison Hogge (hogge.allison@epa.gov) by January 29.