An Inconvenient Truth, the documentary featuring Al Gore's attempts to alert people to the dangers of climate change, triggered a global conversation when it was released in 2006, and earned $50m at the box office. Now the film's producers are talking up a potential sequel.

"We have had conversations," Lawrence Bender told the Hollywood Reporter. "We've met; we've discussed. If we are going to make a movie, we want it to have an impact." Fellow producer Scott Z. Burns added that he "would only support doing a follow-up if we have a really, really amazing way of attacking the issue and reinvigorating it."

Bender, who has also frequently produced Quentin Tarantino's movies, argues that a sequel is necessary because the headway made by the first film has been eaten into by lobbying from the fossil fuel industry. "They did a really good job of pushing back and confusing people," he says. "Some people actually believe global warming doesn't exist."

An Inconvenient Truth was made after fellow producer Laurie David saw former presidential candidate Al Gore deliver a slideshow presentation about the impact of fossil fuel consumption on global warming; the film is based around that slideshow, with Gore expanding on his thesis as well as showing what inspired his environmentalism. It won an Academy Award for best documentary, as well as one for best original song.

David also called for a sequel to be made. "God, do we need one," she said. "Everything in that movie has come to pass. At the time we did the movie, there was Hurricane Katrina; now we have extreme weather events every other week. The update has to be incredible and shocking."