The hacked emails from Hadley clearly show that the scientists promoting the AGW hypothesis act like co-conspirators rather than scientists. They are true believers, but are willing to fudge data to hide inconvenient facts. They reveal that they are unwilling to share their data as required by law, and take measures to conceal their data rather than sharing it, a startling departure from the way science is done. They warn against involving colleagues that are "unreliable." They are clearly promoting government policy rather than science. Here is a good discussion from Powerline. Some people have suggested that the hacked emails might be a hoax, but after looking at some of them, that is highly unlikely. The person who released these emails is almost certainly an insider.