Legal blogger Jonathan Adler has written an excellent layman's summary of the state of play on the Mann vs Steyn and Steyn vs Mann cases. For those following these things closely there is unlikely to be anything new, but for those who need to be brought up to speed this is the place to go.
The climate policy debate is quite heated. Partisans hurl charges against each others with impunity, challenging the honesty, intelligence, and integrity of those on the other side. So it’s understandable that many environmentalists hope Mann will win. Yet should he prevail, many on his side may come to rue this result. Should Mann win, it will not be long before defamation suits are filed in the other direction. Every time an environmental activist suggests someone on the other side is “bought” by fossil fuel interests, they had better be able to substantiate their claim, or they will be inviting a lawsuit.