Gov. Jerry Brown, issuing an ominous appeal on climate change, said Tuesday that the world may already have “gone over the edge” on global warming and that humanity must reverse course or face extinction.
Brown, speaking at a summit of mayors from around the world, has increased his already-high profile on climate change in recent months, working to coalesce support for carbon reduction policies ahead of global climate talks in Paris in December.
Pope Francis, who organized the conference after the release of his encyclical on climate change, told the group through an interpreter that he has “great hope … that a fundamental basic agreement is reached” among global leaders.
Brown’s remarks reflected the urgency of the effort, but also its limitations.