Al Gore

Former Vice President Al Gore helped shape the conversation about climate change with An Inconvenient Truth. Now he's back with a sequel — called An Inconvenient Sequel: Truth to Power, due out next month -- and it follows Gore as he continues the crusade he made famous with that first film.

The movie shows Gore standing in Miami floodwater, flying over imploding boulders of ice in Greenland and in Paris — trying to push the climate agreement over the finish line.

In what may be the most unlikely meeting of the presidential transition process so far, former vice president, former Democratic presidential nominee, former senator and Nobel Peace Prize winner Al Gore met with President-elect Donald Trump on Monday.

Gore has spent decades warning about the dire consequences of unchecked, man-made climate change, while Trump has regularly called climate change "a hoax" during the campaign.