Al Gore: Donald Trump's position on climate change 'should concern everyone'

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Al Gore on 2016 campaign: 'Sometimes I do a double take'

Ten years after the Oscar-winning documentary "An Inconvenient Truth," Al Gore is concerned that a potential Donald Trump presidency could roll back progress in the fight against climate change.

"He has said some things on the climate crisis that I think should concern everyone,'' the former vice president told Anne Thompson in an exclusive interview on TODAY Monday.

"I'm not Pollyanna-ish, but I do think that there is still some basis for hope."

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Through the years: Bill Clinton, Hillary Clinton and Al Gore
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Al Gore: Donald Trump's position on climate change 'should concern everyone'
First lady Hillary Rodham Clinton shares a laugh with Vice President Al Gore in the Old Executive Office Building in Washington, July 11, 1995 where they announced Medicare regulatory reforms to reduce paperwork. (AP Photo/Denis Paquin)
Hillary Rodham Clinton sits on the lap of her husband, democratic presidential candidate Bill Clinton left, as she jokes with vice presidential candidate Al Gore and his wife, Tipper, during a brief rest on their bus in Durham, N.C., Monday, Oct. 26, 1992. The democratic ticket has spent the last two days touring the state. (AP Photo/Stephan Savoia)
Democratic presidential candidate Vice President Al Gore and Senate hopeful first lady Hillary Rodham Clinton talk during the Black and Puerto Rican and Hispanic Association Church Service at the Wilborn Temple Church of God in Christ Sunday, Feb. 20, 2000, in Albany, NY. (AP Photo/Rick Bowmer)
WASHINGTON - 1998: (NO U.S. TABLOID SALES) President Bill Clinton, Hillary Clinton and Vice President Al Gore (R) sit in the Rose Garden at the White House in 1998 in Washington, D.C. (Photo by David Hume Kennerly/Getty Images)
A $2-million gala for the Democratic National Committee in New York City, Monday evening, April 24, 2000, marks the first time this year that President Clinton, Vice President Al Gore and first lady Hillary Rodham Clinton have all campaigned together. Gore, left, with wife Tipper, is the Democrats' presumptive presidential nominee, while Hillary Clinton is running against New York Mayor Rudolph Giuliani for the state's open U.S. Senate seat. (AP Photo/J. Scott Applewhite)
Democratic presidential candidate Vice President Al Gore sits next to Senate candidate first lady Hillary Rodham Clinton during a campaign rally at the 92nd Street YMHA in New York on Sunday, March 5, 2000. (AP Photo/Doug Mills)
Vice President Al Gore and his wife Tipper, left, wave to the crowd along with President Clinton and his wife Hillary Rodham Clinton, as they prepare to start their post-convention bus tour Friday, Aug. 30, 1996, in Cape Girardeau, Mo. (AP Photo/Tom Gannam)
Pres. Bill Clinton, center, waves as Vice Pres. Al Gore talks to him during the congressional dinner, Wednesday, Jan. 20, 1993, Washington, D.C. First Lady Hillary Clinton applauds at left. (AP Photo/Greg Gibson)
Democratic presidential candidate Bill Clinton, left, applauds as Sen. Al Gore (D-Tenn.), speaks at the Arkansas governor’s mansion, July 9, 1992 in Little Rock, Arkansas. Clinton had named Gore as his choice for running mate for the presidential race just four days before the start of the Democratic National Convention. Hillary Clinton peers over the gentlemen’s shoulders. (AP Photo/Stephan Savoia)
From left: Democratic Presidential nominee Bill Clinton, his wife Hillary, running mate Al Gore and his wife, Tipper arrive in Nashville Wednesday afternoon. The group is to take part in several fundraisers and a rally at the Grand Ole Opry House. (AP Photo/Stephan Savoia)
UNITED STATES - JANUARY 03: SENATE SWEARING IN--Freshman Senator Hillary Clinton, D-N.Y., and Vice President Al Gore pose for photos in the Old Senate Chamber after an official photo. The Senate was sworn in earlier for the 107th Congress in the Senate Chamber. (Photo by Scott J. Ferrell/Congressional Quarterly/Getty Images)
WASHINGTON, DC - APRIL 23: U.S. President Bill Clinton (R) laughs 23 April 1993 as Vice President Al Gore (C) jokes with White House volunteers attending a reception in their honor. Peeking out (L) from behind Vice President Gore is First Lady Hillary Clinton. (Photo credit should read PAUL RICHARDS/AFP/Getty Images)

In "An Inconvenient Truth,'' Gore used charts and graphs to make the connection between increasing carbon emissions and the changing climate. To mark the 10th anniversary of the film's release on Tuesday, Paramount is offering free downloads of it on Amazon, XFINITY on demand, iTunes and other digital retailers.

More from TODAY: Al Gore takes on global change in 'The Future'

Trump has called climate change a hoax created by China.

"President [Jimmy] Carter said that he hopes [Trump] will be malleable, so I don't know,'' Gore said before laughing.

Gore called the tone of the presidential campaign in which Trump is the presumptive Republican nominee "unusual."

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"I'm one of the millions who sometimes just does a double take: 'Whoa, what was that?''' Gore said.

While numerous prominent Republicans have denied that climate change is real, Gore believes the fight against climate change cuts across party lines.

"I'm proud to have some Tea Party allies,'' he said. "What's being called the Green Tea Party."

Gore, who won a Nobel Peace Prize in 2007, still gets attacked for predictions in the film.

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"It's not unusual to see attacks on a messenger by people who don't like the message,'' Gore said. "I don't own a private plane. My house runs on 100 percent renewable energy. I do walk the talk."

While he has praised Democratic candidates Bernie Sanders and Hillary Clinton for addressing climate change, he has not specifically endorsed either one for the presidential nomination. He said he plans on backing whomever secures the Democratic nomination.

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