NEW YORK — Pope Francis released his much-anticipated teaching document on the environment Thursday, declaring an urgent need for the political and spiritual conversion of global leaders and individuals to dedicate themselves to curbing climate change and ending policies and personal habits that destroy creation. The document, or encyclical, titled “Laudato Si” (Praise Be), captured world attention well before its release. Here are some questions and answers on the significance of the document: Q: What is an encyclical? A: An encyclical is one of the highest forms of teaching from a pope as he interprets Catholic doctrine.