Addressed not only to Catholics but to"every person living on this planet," Pope Francis' second encyclical is a challenging call for a "bold cultural revolution" in how we think about technological progress and economic growth. The degradation of our environment, he says, is a symptom of deeper problems: rapid change, unsustainable overconsumption, indifference to the poor, and the decay of social values. He offers a variety of solutions, including a change in lifestyles away from "extreme consumerism" and towards a greater sense of social responsibility. For Christians, an "ecological spirituality"-one that is grounded in the convictions of our faith- is not "an optional or a secondary aspect of our Christian experience." Drawing on the rich social teachings of the Church, Laudato Si is a groundbreaking document that will be discussed and studied by both believers and non-believers for years to come. Study guide included for Reflection and Discussion,