When it comes to all this, the comparison to "Climategate" springs to mind, but there’s one enormous difference: Climategate was manufactured, a made-up controversy (what I call a manufactroversy) that had no real teeth — as was its failed sequel. [Assuming you didn't actually read them] The emails released weren’t damning at all, and didn’t show scientists tinkering with or faking data. As much as the media made of it, as much as climate change denial blogs played them up, it has been shown again and again that Climategate was all sound and fury, signifying nothing.
I’ve collected the content of all of those posts in an ebook (pdf format) titled If the IPCC was Selling Manmade Global Warming as a Product, Would the FTC Stop Their Deceptive Ads? (13MB) $5.00 (U.S.)
Global warming theorists now claim that Arctic sea ice melt causes colder and snowier winters - the empirical evidence indicates that it must also cause colder oceans, a definite AGW negative feedback