Joel Achenbach of the Washington Post has a major op-ed piece picked up by the News Journal today , explaining that environmental crises around the world are fare more complicated than just global warming. Stipulated. But then he goes into this riff on regulation and free markets: The basic problem is that there are so many of us now. Four centuries ago, there were about 500 million people on Earth. Today there are that many, plus 6 billion. We're rapidly heading toward 9 billion. Conservatives say that we just need to focus on maintaining free markets and let everything sort itself out through the miracle of the invisible hand. But the political tide is turning against unfettered free markets and toward greater regulation. Climate change policy is part of that: Somehow we've got to embed environmental effects into the cost of energy sources, consumer goods and so on. The market approach by itself has let us down . Viewed broadly, it appears that humans are environment-destroy...