In an interview with NBC, former Vice President Al Gore talked about the future of the "climate crisis" movement and what a Trump presidency would mean for the fight against global warming.
"Do you see a Trump presidency undoing all the progress that the U.S. has made in the last 10 years in the fight against climate change?" NBC's Anne Thompson asked Gore.
"He has said some things on the climate crisis that should concern everyone," Gore said.
"This is a man who has called climate change a hoax and other words that we can not use on network TV. So where's the hope?" the distressed NBC correspondent asked.
"I'm not Pollyannaish about it, but I still think there is some basis for hope," Gore said.
Gore responded to criticism about the lack of natural disasters predicted.
"It's not unusual to see attacks on a messenger by people who don't like the message. I don't own a private plane. My house runs on 100% renewable energy. I do walk the walk," Gore said.
Gore would not endorse either Hillary Clinton or Bernie Sanders for the Democratic presidential nomination. However, he said he will back the winner of the primary contest.