Well, commenting anyway. While browsing opendemocracy's climate change discussions, I came across this which appears to contain a reply by JH. Which I found rather interesting. Of course there is no way to know if it really is JH, but the answer is much like that he would give, so maybe.
Apart from that, OD rather proves JA's point about fragmentation: sci.env is a better way to go.
Meanwhile another John (Lawton, ex-head of NERC) said If this makes the climate loonies in the States realise we've got a problem... but then he was always quite blunt.
Also, an interesting one on Mars cl ch which calls.. ahem... certain people idiots. You Know Who You Are. Hold on a mo... astro? Its our old friend from sci.env SS though he hasn't posted there since 2001.