WSJ.com: "Laymen may be confused by the notion of a scientific discovery 'that is completely the opposite of what scientists had thought.' After all, we keep reading that all scientists agree about global warming and no one may question it. Is science infallible or isn't it?
The answer is: It depends. Scientific teachings that are part of the 'ordinary magisterium,' such as those involving the interaction between Earth's magnetosphere and solar wind, are not infallible. But global warming is what scientists call an ex cathedra doctrine."