Selling fireworks is now banned in the Indian capital of Delhi, thanks to air pollution concerns.
Fireworks are a traditional part of the Hindu festival of Diwali. But the morning after the recent celebrations, Delhi's citizens woke to a thick blanket of toxic smog.
A lawsuit prompted by the incident led India's Supreme Court to suspend all fireworks sales in the city and order a three-month study of the harmful effects of fireworks.
But fireworks are hardly the only pollutant Delhi has to worry about. A sharp increase in the number of cars on the road has led to driving restrictions in the city.