Legendary British rock music group the Rolling Stones performed their first free concert in more than three decades, headlining a show dedicated to raising awareness about global warming.
Thursday's concert at the Staples Center in Los Angeles was organized by the National Resources Defense Council - a U.S. environmental group that paid for most of the tickets.
Stones singer Mick Jagger said the band did the show because they wanted to support a "good cause."
Former President Bill Clinton introduced the group with remarks about the dangers of global warming, saying it is up to ordinary people "to stop the planet from burning up."
More than 12,000 people attended the show, which also brought out such Hollywood celebrities as actors Pierce Brosnan, Leonardo DiCaprio and Lisa Kudrow.
The last free Rolling Stones concert occurred at California's Altamont Speedway in 1969. The show was marred by violence between fans and security that left four people dead.