"As former U.S. vice president Al Gore filmed the sequel to his environmental documentary last year, he did not expect to be dealing with a new president who has dismissed climate change as a hoax.

Gore's "An Inconvenient Sequel: Truth to Power," premieres at the Sundance Film Festival on Thursday a day ahead of Donald Trump's inauguration as U.S. President.

The directors, Jon Shenk and Bonnie Cohen, said that while the film presents an urgency to address climate change, it is not all doom and gloom as environmentalists believe there is hope in adopting clean, renewable energy."

Piya Sinha-Roy reports for Reuters January 18, 2017. [2]