OriginalArlen writes to tell us about some compelling global warming coverage in the Washington Post. First there is an article about a study indicating that melting Arctic ice is threatening polar bears with extinction. The article quotes an environmentalist: "This study is the smoking gun. Skeptics, polluting industries and President Bush can't run away from this one." And the polar melting is opening new shipping lanes. The second article details a trip late in October through the Northwest Passage by a Canadian icebreaker. Never before in history could this trip have been accomplished so late in the year; ice would have choked off the passage. Estimates of when the passage might be navigable by commercial shipping range from 2020 to the end of the century. The indigeneous people are not looking forward to this development.