NDTV: As he launched a National Air Quality Index on Monday morning at a two-day environment conference, Prime Minister Narendra Modi accused western countries of double standards saying, "People who lecture us on environment protection refuse to give us nuclear fuel for clean energy." Here are 10 updates: The index has been launched for 10 cities initially, including Delhi, which has recently been declared the world's most polluted capital by the World Health Organisation or WHO, bringing pressure on...