Ice and the Sky

Luc Jacquet writes and directs this French documentary about global warming.

The film follows the work of French scientist Claude Lorius who has undertaken more than 20 polar expeditions to Antartica since the 1960s and has been warning the world about the dangers of global warming ever since.

Although he has had to argue to prove global warming's existence throughout his career, the 82-year-old continues his calls for action having eventually been proven right.