Time and again they say that climate skeptics are cherry picking the data, and are falling for their own confirmation biases. They may be right. Many of the people who believe in man-made global warming are scientists, and scientists are really good at spotting those sorts of things. But they're also human, so they're just as likely to be guilty of cherry picking and confirmation bias as anyone else.
Never was this more true, than when NOAA announced earlier this year that the global warming "pause" didn't happen. For the past 19 years give or take, the official data has shown very little global warming, which as you might expect has perturbed climate scientists ever since.
Then NOAA scientists conducted a study that claimed the methods used to measure ocean temperature in the past were inaccurate, and after compensating the data to reflect newer measuring techniques, they found that the world had been warming this whole time.