As for the global warming example, everyone, especially those interested in OB or LW, should read The Deniers (http://www.amazon.com/Deniers-Renowned-Scientists-Political-...). The author still believes in agw even after assembling all the evidence in the book. Every one of the experts still accepts global warming, they apparently believe that only the information they are personally and professionally acquainted with was misused by the zealots and everything else was accurately reported by the media.
Most interestingly, most of the scientists the author interviewed still believe in global warming; they just believe their own research was twisted or misinterpreted to support it, all the rest they still believe. Because of the media barrage supporting global warming, that is all most people, even scientists who do not actually look for disconfirming claims and evidence, ever see.
Also, Moore's "Climate of Fear" (published by Cato), http://www.amazon.com/Climate-Fear-Shouldnt-Global-Warming/d... , points out that the effects even proponents claim have been getting down graded, to the point where the actually expected global warming is likely to be more beneficial than not.