The journalist has the ultimate power, a cynic once said, the power to choose whom to be co-opted by. That temptation is never greater than when you are writing about environmental policy. You can go to the environmental groups and get one set of facts. Or you can go to the industry groups and get an entirely different set of facts. Both sides have long histories of exaggeration and distortion, and there's no other realm of public policy in which it is so hard to find honest brokers, capable of offering a balanced perspective. Nonetheless, over the past couple of...