Amitabh Bachchan, who’s been a superstar in India for 50 years, has campaigned for years for the preservation of film from Indian cinema’s early history, which goes back to 1931 for talkies and 1913 for silent movies. Some 80% of Bollywood’s output from 1931 to 1950 is lost or unavailable to the public, and out of more than 1,100 silent films made there, only 29 are known to have survived. And much of that old celluloid is in poor condition. – BBC