Secretary of the Interior Dirk Kempthorne today announced that he is accepting the recommendation of U.S. Fish and Wildlife Service Director Dale Hall to list the polar bear as a threatened species under the Endangered Species Act (ESA). The listing is based on the best available science, which shows that loss of sea ice threatens and will likely continue to threaten polar bear habitat. In making the announcement, Kempthorne said, “I am also announcing that this listing decision will be accompanied by administrative guidance and a rule that defines the scope of impact my decision will have…to make certain the ESA isn’t abused to make global warming policies.” What does this mean, and what devil is in the details of how this decision will be implemented?