Fireworks’ part in toxic air pollution | Letters

Delhi was this week blanketed with toxic fog after hundreds of thousands of people set off fireworks to mark Diwali (Report, 1 November). The pollution levels were up to 42 times the safe limit and even exceeded the normal harmful air in the city from traffic. In Britain, firework night and the following day are the peak days for hospital admissions for asthma and other breathing problems. Fireworks pollute the air with toxic heavy metals such as lead, mercury, aluminium, cadmium and radioactive