Huffington Post: Former Sen. Rick Santorum (R-Pa.) attempted to argue Sunday that it's more appropriate for him to be weighing in on climate change than it is for Pope Francis, who is not only a religious leader but also a chemist.
In the coming weeks, the pope is expected to release a groundbreaking encyclical -- a papal letter sent to all the bishops of the Roman Catholic Church -- making the case that addressing climate change and its effects on the poor is a moral and religious imperative.
Santorum, a potential...