And yet, despite all the claims that the author makes about quality of air and life in Delhi, it's steadily growing, adding something like 4 million inhabitants over the last 5 years. As the article quotes "Yet New Delhi was bursting its seams, because newcomers from rural India kept flooding in." - the people are voting with their feet that urbanization with the associated jobs and wealth is more important to them personally than better environment conditions, since they're leaving the latter to gain the former.