BREAKING NEWS: According to Richard Muller from UC Berkeley, global warming is caused by the increase in carbon dioxide in the atmosphere. Not changes in the Earth’s orbit, not changes in volcanic activity. Either changes in carbon dioxide or something else that happens to exactly match changes in carbon dioxide. But in all seriousness, this guy is a serious physicist who set out to challenge the findings of the IPCC using hard data, and says he ended up confirming them beyond a shadow of a doubt.