Yes, climategate did much to reveal the corrupt inner-workings of the the climate science establishment led by the IPCC. Thanks to the leaker/hacker, as well as the work of journalists and citizen scientists such as Stephen McIntyre, we know that IPCC insiders were guilty of the following: journal tampering, suppressing publication of articles critical of their work, violating FOIA laws and conspiring to do the same, hiding the decline, intentionally misrepresenting data and methods, stonewalling and otherwise inhibiting the auditing of their work, failure to disclose adverse results, colluding with friendly journal editors to violate the IPCC’s own review process rules, giving false testimony regarding their own work, and other conduct unbecoming scientists.
The way I look at it, the star witness of the global warming movement, the IPCC, has been utterly discredited, along with anyone else who aided and abetted its misdeeds. Prestigious journals such as Nature, scientific societies such as the National Academy of Science and the Royal Society, government agencies such as NASA and NOAA, universities such as Penn State, corporate media and science journalists,… also have no reputation left.
Given all this, how can we trust anything the climate science establishment says?