Communities as a whole can implement environmental actions that often have a bigger impact than individual action. 2003 Jul;111(9):A452; author reply A452-3. Ethics in humanitarian services: report on the earthquake in Nepal. Aldo Lopold, A Sand County Almanac, 1949, Directed by L.P. Pojman, Environmental Ethics, Introduction, 2008, Hans Jonas, Principe responsabilit, 1979, Allowed HTML tags: