We in the news business often enlist in moral crusades. Global warming is among the latest. Unfortunately, self-righteous indignation can undermine good journalism. Last week's NEWSWEEK cover story on global warming is a sobering reminder. It's an object lesson of how viewing the world as "good guys vs. bad guys" can lead to a vast oversimplification of a messy story. Global warming has clearly occurred; the hard question is what to do about it. If you missed NEWSWEEK's story, here's the gist. A "well-coordinated, well-funded campaign by contrarian scientists, free-market think tanks and industry has created a paralyzing fog of...