'Each breath we take is killing us': Environmentalists seek PM's intervention

A group of environmentalists wrote to Prime Minister Narendra Modi on Sunday urging him to take prompt action in fixing the pollution problem in the country, especially in Delhi where the air quality was the worst in three years.

"We, the people of India, request you to please take leadership to resolve the serious problem of air pollution and its health impact in the whole country, especially in the Indo-Gangetic plain and most specifically Delhi, which is choking under a thick, lethal smog," the letter read.

"Our doctors have told us we are in a state of national health emergency. There is no time for reactive measures," it said. "We earnestly request you to save our children, our elderly, our most vulnerable who suffer the worst effects of pollution."