Leonardo DiCaprio as Self

Bill Clinton as Self

John Kerry as Self

Barack Obama as Self

Elon Musk as Self

Pope Francis as Self

Ban Ki-moon as Self

Alejandro González Iñárritu as Self

Michael Brune as Self

Marc Mageau as Self

Enric Sala as Self

Jake Awa as Self

Oprah Winfrey as Self (archive footage)

Jason E. Box as Self

Philip Levine as Self

Michael E. Mann as Self

Donald Trump as Self (archive footage)

James Inhofe as Self

Marco Rubio as Self

Ma Jun as Self

Alvin Lin as Self

Sunita Narain as Self

Ashok Lavasa as Self

Anote Tong as Self

Tommy E. Remengesau Jr. as Self

Jeremy Jackson as Self

Lindsey Allen as Self

Farwiza Farhan as Self

Ian Singleton as Self

Gidon Eshel as Self

Xi Jinping as Self

Ted Cruz as Self (archive footage)

Al Gore as Self (archive footage)

John McCain as Self (archive footage)

Angela Merkel as Self (archive footage)

Mitt Romney as Self (archive footage)

Haji Ji as Self - farmer

Rick Scott as Self (archive footage)

Lisa Murkowski as Self (archive footage)

Mary Landrieu as Self (archive footage)

Richard Shelby as Self (archive footage)

Joe Barton as Self (archive footage)