Concerning global warming, the pope evidently has been badly misinformed and led astray.
Check it out:

Pope Francis evidently has decided to make fighting global warming an important papal cause in 2015. He praised the United Nations’ climate treaty efforts in Lima, Peru; the Vatican has indicated he will issue an encyclical letter to the world’s bishops; he is encouraging the world’s 1.2 billion Catholics to take up the battle against climate change; and he’s planning to address the next UN climate conference in Paris to pressure world leaders to adopt a strong climate agreement.