Larry Barnthouse is the President and Principal Scientist of LWB Environmental Services, Inc. Before he became a consultant, he was a research staff member and Group Leader in the Environmental Sciences Division at Oak Ridge National Laboratory. In 1981 he became co-principal investigator on the U.S. Environmental Protection Agency's first research project on ecological risk assessment. Since that time, he has been active in the development and application of ecological risk assessment methods for EPA, other federal agencies, state agencies, and private industry. He has chaired workshops on ecological risk assessment for the National Academy of Sciences and the Society of Environmental Toxicology and Chemistry, and served on the peer review panels for EPA's Framework for Ecological Risk Assessment and Guidelines for Ecological Risk Assessment. He continues to support the development of improved methods for ecological risk assessment as the Hazard/Risk Assessment Editor of Environmental Toxicology and Chemistry and a Founding Editorial Board Member of Integrated Environmental Assessment and Management. Please check out his web site for summaries of his current activities and a list of publications.