It was March 25, 1989 when the unprecedented oil spill from the Exxon Valdez tanker began polluting the Gulf of Alaska. What have we learned since then? Some call for “Drill Baby Drill,” and the political power of the petroleum industry has only increased. Today’s guest is John Demos of the Alaska Wilderness Society. Now, though the entire Arctic is under threat, there is some degree of hope for a real change in policy.