I assume this is all mostly a matter of stupidity and mischief making rather than any concerted attack, but the 1971 R+S science paper makes an unexpected comeback. Tim Lambert has the story; Lubos falls for the lies (I’m being a bit inaccurate there: Lubos doesn’t fall for it, he jumps in with enthusiasm and ignorance).
Whats the point of all this? The usual mixture I suppose: you have to fill newspapers with something; that its wrong doesn’t really bother anyone; that its misinformation serves the usual purposes. And it does in part so serve: I’ve just had to remove As a research associate at Columbia University in 1971, Hansen wrote a climate modeling program which predicted that fossil fuel burning would discharge enough fine dust in the atmosphere that much of the sun’s rays would be screened out. His software predicted that this “global cooling” would lower Earth’s average temperature by six degrees within fifty years from Hansens entry on wikipedia; the tories wander around and no-one checks.
More at http://www.wmconnolley.org.uk/sci/iceage/ for those coming to this late.