The pope's encyclical Laudato Si' tells us to protect nature and act on climate change for more than reasons of self interest.
The pope's encyclical challenges the belief in markets to solve social ills – a difficult message for Catholic Republican presidential candidates to accept.
By equating human rights to the protection of nature, the pope's encyclical opens up an international debate with broad political implications.
For people who take the Bible seriously – not only Catholics – the pope's encyclical on climate change and the environment will change minds.
The pope's encyclical turns climate change into a moral discussion by focusing on the disproportionate impact of climate change on poor countries and regions.
Freddie Gray had high levels of lead as a child, one of the environmental injustices suffered by poor and minority groups.
The EPA and other federal agencies have yet to address environmental justice – despite a long history of poor and minority communities suffering environmental ills disproportionately.