India, Dec. 17 -- Delhi chief minister Rekha Gupta, while talking about pollution in the city, said on Wednesday that a major contributor to the pollution in the national capital is vehicles and transportation.

She added that a public transport mode such as the Delhi metro is crucial in curbing the pollution. In an attempt to encourage people to use public transport more often, Gupta said, "If we want Delhi to be breathable, we have to use public transportation."

"I often tell those who ask about pollution, how will pollution decrease in Delhi? I say that a large part of pollution comes from transportation. When Delhi, which appears as a small dot on the map of India, actually spreads over 1,483-1,500 kilometres, and nearly 3 crore peop...