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Pope Francis may drop political bombshell on climate change

Pope Francis is prepared to say "most climate change is due to human activity and calls it one of the most important moral issues facing society."

Pope Francis arrives in St. Peter's Square for a meeting with the Roman Diocesans on June 14, 2015 in Vatican City, Vatican. (Photo by Franco Origlia/Getty)
Pope Francis arrives in St. Peter's Square for a meeting with the Roman Diocesans on June 14, 2015 in Vatican City, Vatican. Getty Images

Chuck Todd

Chuck Todd is NBC News' chief political analyst and the former moderator of "Meet The Press."

Mark Murray