A prominent physicist and skeptic of global warming spent two years trying to find out if mainstream climate scientists were wrong. In the end, he determined they were right: Temperatures really are rising rapidly.
The study of the world's surface temperatures by Richard Muller was partially bankrolled by a foundation connected to global warming deniers. He pursued long-held skeptic theories in analyzing the data. He was spurred to action because of "Climategate," a British scandal involving hacked emails of scientists.
The best part is when he says, "The skeptics raised valid points and everybody should have been a skeptic two years ago,". This is how science works, and I was always a bit worried about all the negative reaction to skeptics — even though I thought mainstream thought was correct.