The recent revelations of misrepresentation by CRU scientists about research on climate change should come as no surprise. Scientists, like all human beings, are sometimes tempted to lie or cheat and occasionally they succumb to those temptations.
Actually, scientists don't do too badly. According to a recent analysis of surveys
of scientific misconduct:
In surveys asking about the behavior of colleagues, fabrication, falsification, and modification [of data] had been observed, on average, by over 14% of respondents, and other questionable practices [such as "dropping data points based on a gut feeling", and "changing the design, methodology or results of a study in response to pressures from a funding source"] by up to 72%.
That's probably a better track record than sociologists or economists could muster. I shudder to think what the corresponding percentages would be for politicians or journalists.