Climate Gate, explained.

It contains at least one mistake. The professor should be saying, “I’ve just completed Mike’s Nature trick of adding in the real temps to each series for the last 20 years (ie from 1981 onwards) and from 1961 for Keith’s to hide the decline.” I made a mistake with a dangling "f" when I had to break the comment into two frames.

and the whole set should end with, "Even if the science of future climate change were debatable, I don't think that I'd trust anyone who denies that the globe itself isn't warming." The video tends to knock off the last phrase.