Not all of Francis's critics sound like a McCarthyite version of Foghorn Leghorn. But this refrain is common: the pope is beyond his competence in matters of science and public policy, at least where the environment is concerned.

Not all of Francis's critics sound like a McCarthyite version of Foghorn Leghorn. But this refrain is common: the pope is beyond his competence in matters of science and public policy, at least where the environment is concerned.