We are dismayed to hear that Dr. Paul Epstein of Harvard Medical School's Center for Health and the Global Environment passed away on Sunday. In February 2011, Greenpeace was lucky enough to host a press conference on board the Greenpeace vessel Arctic Sunrise to release a study he directed entitled, "Full Cost Accounting for the Full Lifecycle of Coal." Dr. Epstein's work was invaluable to the understanding of climate change and he will be missed. www.greenpeace.org/usa/en/news-and-blogs/campaign-blog/harvard-study-500-billion-full-cost-of-coal/blog/33350/