But the entertainment industry remains one of the biggest polluters in southern California, campaigners say, with many of its eco-friendly gestures simply showy stunts that make little difference.
Producing films and television programmes remains an incredibly energy intensive business, requiring massive amounts of power to operate vast lighting rigs, run air conditioning systems and cameras, and feed huge casts and crews around the clock.
Then there is the disposable nature of the industry - the intricate sets built from scratch, such as the airport created just for Steven Spielberg's 2004 film The Terminal, which use up tons of wood, metal, plastic and paint and are often discarded when production ends. (The Telegraph)