Huffington Post: In a highly anticipated papal letter released June 18, Pope Francis called on Catholics worldwide to make safeguarding the environment and battling climate change an urgent and top priority of the 21st century. In the lengthy treatise, more broadly addressed to every person who lives on Earth, the pope lays out a moral case for supporting sustainable economic and population growth as part of the churchs mission and humanitys responsibility to protect Gods creation for future generations. While...