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The article discusses the rules for ethical ecology for researchers and officials who craft environmental policies with scientists, specifically ecologists and conservation social scientists. Topics include contributed to inaction and political paralysis in confronting enormous ecological challenges such as climate change; and ethical arguments can move hearts and public opinion on scientific information to enact policies that encompass both scientific and ethical realities.

Discusses efforts to restrict diesel emissions in the U.S. Amount of particulate emissions allowed by the 2004 Environmental Protection Agency standards for model cars and trucks; Uses of the filters outfitted in diesel engines; Possible approach to be used in the order-of-magnitude reduction in nitrogen oxide emissions from heavy-duty vehicles.