On a day when headlines reported yet another year of record high temperatures on Earth, environmental crusader Al Gore came to the Sundance Film Festival with some good news: global warming can be solved.

“We’re going to win this,” the former U.S. vice-president told a cheering Eccles Theatre audience Thursday night, which earlier had given him a standing ovation.

So much meaningful progress has now been made in the fight against global warming, he said, “no one can stop it” — meaning that climate change deniers like incoming U.S. President Donald Trump won’t succeed in their efforts to take the planet’s rising temperatures off the to-do lists of politicians worldwide.

Gore was speaking following the world premiere of An Inconvenient Sequel, a followup to the Oscar-winning 2006 documentary An Inconvenient Truth, which chronicled Gore’s decades of efforts to make global warming an urgent priority for the world’s politicians and regular citizens.

Gore’s hinted that even Donald Trump may be rethinking his stance as a global warming denier, despite the fact — to Gore’s dismay — Trump has appointed climate change skeptic Scott Pruitt to head the U.S. Environmental Protection Agency.

Gore met with Trump shortly after the incoming president’s election last November and while the substance of the discussion is confidential, it appears Trump was impressed by the weight of evidence Gore presented that the relentless burning of fossil fuels and other pollutants have greatly warmed the atmosphere above our heads.

“I’ll tell you, over the years there have been a lot of people who started out as deniers and who have changed over time,” said Gore, his hair now much greyer that it was when his first film premiered at Sundance.

“Whether (Trump) will or not, remains to be seen. This story has many chapters to unfold.”

There’s certainly food for thought — and an impetus for action — to be found in An Inconvenient Sequel, subtitled “Truth to Power,” which Gore urged everybody to spread the word about prior to its wide theatrical release, scheduled for July 28.

Directed by Bonni Cohen and John Shenk (the first film’s director, Davis Guggenheim, is one of the executive producers), the doc begins with a devastating look at how much greater a threat global warming has become in the decade since An Inconvenient Truth.

The film opens with footage of giant icebergs exploding and crashing into the sea as vast areas of polar ice retreat from rising temperatures, caused by air warmed mainly by the burning of fossil fuels. As the camera pans past the fast-vanishing ice, voices of climate change deniers are heard mocking Gore for his efforts to sound the alarm.

In what amounts to a colossal “I told you so,” the first half of the film has Gore travelling the globe, not just to preach the environmental gospel but also to see firsthand the huge toll of rising worldwide temperatures, which have hit new highs for each of the past three years.

He visits Miami, where downtown streets are periodically flooded by seawater caused by climate-induced rising tides. The water is so deep, large fish swim in the middle of the street.

Set to a mournful and urgent score composed by Jeff Beal, the film reveals many other climate-change horrors across the planet: melting streets in India, drought in Syria that started the migrant crisis long before civil war did, and a rising threat of tropical diseases moving into the northern hemisphere.

The second half of the film takes an entirely different tack, showing how a great deal of progress has been made fighting global warming.

We see Gore persuading reluctant politicians in India, where hundreds of coal-fired plants are being built to provide electricity for the country’s vast population, to sign on to the landmark 2015 Paris Agreement to fight climate change. (Canada’s Prime Minister Justin Trudeau takes no persuading at all; he and Gore embrace as if they’re old friends.)

Gore is also seen convincing the World Bank and Silicon Valley tech firms to fund renewable energy projects and to share green energy technology with developing countries.

He presents hard evidence that solar power, long considered too expensive to generate on a large scale, is finally in a position to compete with and even beat the conventional fuel sources coal, oil and gas.

“Now what you’re seeing is common-sense, hard-nosed business decisions, based on real numbers.”

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He boasts of having trained 10,000 people in 135 countries over the past decade to spread the word about climate change, something that will continue with moviegoers when An Inconvenient Sequel opens — each one will receive instructions on how to give a 10-minute climate change talk to their homes and communities.

Gore has become much more of a showman in the past decade but also more convincing in his drive to save the Earth from burning up. He admits to an occasional bout of despair, and warns the fight against global warming will be long and hard, but he’s convinced real change is coming.

“For those who have any doubt, just remember, there are so many others who are yearning to do the right thing and to see the right outcome . . . always remember that the will to act is itself a renewable resource.”

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