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Pope: Destroying the Earth is a sin

Pope Francis made the biblical case for mitigating the effects of climate change, speaking to a massive crowd in Rome.

Pope Francis gives the benediction at the end of an audience with Catholic schools at St Peter's square on May 10, 2014 at the Vatican.
Pope Francis gives the benediction at the end of an audience with Catholic schools at St Peter's square on May 10, 2014 at the Vatican.AFP/Getty Images

Jane Timm