Donald Trump Meets With Climate Advocate Al Gore | Gore said he had a "lengthy and very productive session" with the president-elect, who has previously called climate change a "hoax."
SUBSCRIBE to ABC NEWS: https://www.youtube.com/ABCNews/
Watch More on http://abcnews.go.com/
LIKE ABC News on FACEBOOK
FOLLOW ABC News on TWITTER:
GOOD MORNING AMERICA'S HOMEPAGE: