CBC's news magazine show the fifth estate slammed Dr. S. Fred Singer and company out of the park last evening with the " Denial Machine" , a 40-minute documentary that gave context to the current climate change debate.

Here is a Global TV newshour video clip of DeSmog founder, Jim Hoggan, explaining the PR movement sowing doubt on the realities of global warming.

As part of a nine-stop University speaking tour, the founder of DeSmogBlog, Jim Hoggan, is visiting Montreal's Concordia University department of journalism today. Jim will be speaking on what else but the PR spin tactics being used to muddle the truth on the realities of global warming.

Highlights will no doubt include, some of the more notorious climate change skeptics, namely Tim Ball, Fred Singer and former RJ Reynolds medical "research" advisor Fred Seitz.

It's been out for a couple of weeks now, but make sure you don't miss this article in "This" Magazine – a smart, thoughtful publication, grown locally up here in Canada.

It's a good primer to the way that public relations has been employed in Canada with regards to climate change. If you've been listening at all to the discussion north of the border, you've heard the phrase "made in Canada" a hundred thousand times. But did you know where that came from? It's a legacy of the Canadian Coalition for Responsible Environmental Solutions, which was a coalition manufactured in 2002 by National Public Relations, Canada's largest PR firm.

Be sure to head over to WorldChanging.com this week – they've got a whole "CanadaChanging" series going on, and it's full of interesting stuff.

Most interesting, of course, if we may toot our own horn, is the piece about what we're up to here at the DeSmogBlog.

The only answer, the DeSmog team decided, is to go after the credibility of those attempting to create confusion around climate change, something they have done with relish and great effect, doing investigations into the backgrounds of prominent skeptics, pointing out how often they are in the employ of industry, or lack climate credentials, or are known extremists ideologically ("some of these guys are very… unusual people, so to say"), and then sharing that information with the media through outreach and Google-bombing campaigns. They've been doing an increasingly effective job of destroying the credibility of denialists, helping to defang what may be one of the most morally criminal PR campaigns in world history.

We've got an audio interview to go with this piece – the actual conversation between Alex Steffen (editor of WorldChanging) and Jim Hoggan, which will be posted here shortly. I'll update this post when I've got the link!

In the meantime, enjoy… and don't forget to check out the rest of their great coverage at WorldChanging. They've got a veritable treasure trove of stuff about climate change for your reading enjoyment, along with many other issues too.

UPDATE: The audio file can be found here.