In the documentary, UN Ambassador of Peace, Leonardo DiCaprio journeys around the globe to highlight the perils of a warming planet. DiCaprio travels to Alberta, Canada to see its toxic tar sands. He witnesses the frequently flooded streets of Miami Beach, Florida. He visits Beijing, a city shrouded by a constant cloak of smog. DiCaprio also explores Indonesia, a country toiling from forest fires caused by unsustainable palm oil development. The film also features a roster of environmental champions as guest stars, from Tesla CEO and inventor Elon Musk, meteorologist and astronaut Piers Sellers, activist and environmentalist Sunita Narain and President Barack Obama. The documentary was uploaded to Youtube and was available to watch for free for two full weeks, giving everyone around the world the chance to see it for themselves.