In 2013 , Gore became a vegan . He had earlier admitted that " it 's absolutely correct that the growing meat intensity of diets across the world is one of the issues connected to this global crisis – not only because of the carbon dioxide involved , but also because of the water consumed in the process " and some speculate that his adoption of the new diet is related to his environmentalist stance . In a 2014 interview , Gore said " Over a year ago I changed my diet to a vegan diet , really just to experiment to see what it was like . ... I felt better , so I 've continued with it and I 'm likely to continue it for the rest of my life . " Gore 's '' An Inconvenient Sequel : Truth to Power '' , a sequel to his 2006 film , '' An Inconvenient Truth '' , premiered at the 2017 Sundance Film Festival . The film documents his continuing efforts to battle climate change
2017 Sundance Film Festival
2017 Sundance Film Festival
Al Gore