The two following linked articles are related to the Vatican sponsored day-long meeting of mayors from around the world that was hosted by the Vatican to discuss environmental challenges and how disruptions in climate were contributing to a humanitarian crisis in migration and modern slavery:
http://www.theguardian.com/environment/2015/jul/21/pope-links-climate-change-with-human-trafficking-and-urges-un-to-take-leadExtract: "Pope laments 'meaningless lives' in tying human trafficking to climate change
Pontiff follows encyclical on fossil fuels with environmental summit of mayors and links climate change to migration, slavery and ‘uncurtailed growth of cities’"
http://www.reuters.com/article/2015/07/21/us-climatechange-summit-vatican-idUSKCN0PV18A20150721Extract: "Pope Francis on Tuesday urged the United Nations to take a "very strong stand" on climate change at a landmark summit this year in Paris on global warming.
The pope spoke at a Vatican-hosted conference of mayors and governors from major world cities who signed a declaration urging global leaders to take bold action at the U.N. summit, saying it may be the last chance to tackle human-induced global warming.
"I have a great hopes in the Paris summit," he said. "I have great hopes that a fundamental agreement is reached. The United Nations needs to take a very strong stand on this."
Last month, the pope issued an encyclical on climate change, the first ever dedicated to the environment. The call to his church's 1.2 billion members could spur the world's Catholics to lobby policymakers on ecology issues and climate change."