Leonardo DiCaprio, Oscar-winning actor and environmentalist, has spent the last three years discussing climate change with individuals around the world. The result of these discussions is his new documentary Before The Flood, in which DiCaprio interviews Barack Obama, Pope Francis, Elon Musk and more. The new climate documentary, presented and produced by DiCaprio, was released in theaters on Friday.

Leo Hickman, who attended the European premier of the film, reviews seven key scenes from the film for Carbon Brief: 

1. Prof Jason Box
2. Prof Michael E Mann
3. Dr Sunita Narain
4. Prof Gidon Eshel
5. Elon Musk
6. Barack Obama
7. Dr Piers Sellers