EcoWatch: The Oscar-winning actor and longtime environmental advocate celebrated the world premiere of his climate change documentary on Friday at the Toronto International Film Festival (TIFF).
"Looking forward to sharing this documentary with everyone as we continue to act on #climatechange together," DiCaprio tweeted.
He also wrote on Instagram, "filming 'Before the Flood' was an incredible experience & today's screening of the documentary at #TIFF16 is an honor."
In the documentary, the UN Ambassador...