The last person I'd usually point to is George Monbiot, who lives in an alternative world with his constantly negative view that always stops short of offering solution to the problems he posits. But it is too good to miss Don't let truth stand in the way of a red-hot debunking of climate change on Guardian Unlimited.
Sadly, it isn't Monbiot who makes it worth visiting the page. It is the observation from one of his readers, RogerINtheUSA:
Channel 4 has always had a problem with science. No one in its science unit appears to understand the difference between a peer-reviewed paper and a clipping from the Daily Mail.
Manages to skewer two fine media outlets in one go.