U.S. Secretary of State John Kerry says failing to fight climate change would be a "moral failure, a betrayal of devastating consequences."

With 2016 on track to be the hottest year on record, Kerry said the impacts of global warming are so evident that "at some point, even the strongest skeptic has to acknowledge that something disturbing is happening."

Kerry was speaking Wednesday at a U.N. climate conference in Marrakech. He also says that he doesn't think U.S. emissions reduction pledges "can or will be reversed" because of the market mechanisms in play.

More at The Associated Press.