It's hard to imagine an Olympic opening or closing ceremony without fireworks exploding in the night sky over a packed stadium.
That tradition could be on the way out, though, under a proposal being considered by the International Olympic Committee.
IOC President Jacques Rogge on Sunday said his organization would study recommendations to eliminate firework displays in a bid to protect the environment by cutting harmful emissions.
Sri Lanka's national Olympic committee proposed the measure, suggesting that technology or laser shows could replace fireworks.
Rogge said he would raise the issue with the IOC environment commission and Olympic host organizers.