Laudato Si appears to be increasing interactions between environmental professionals and faith communities, and as such, is a very important document for all people to understand–not just Catholics! Roman Catholicism is the largest religious denomination in the world (1.2 billion). An encyclical is one of the most authoritative declarations that a Pope can put forth. Laudato Si is both a reflection of the larger moral and religious landscape of environmental values, and perhaps simply the most prominent such statement of values yet crafted. It is symbolic of this moment in time when religious and ethical voices are gaining currency in environmental thinking, regardless of any particular doctrine.