Environment Minister Prakash Javadekar today appealed to the public to refrain from using firecrackers during the festive season and urged people to "don't even use green firecrackers" that were unveiled only 24 hours earlier by Union Health Minister Harsh Vardhan. Speaking to reporters in Delhi, Mr Javadekar also listed steps taken by the centre to combat air pollution levels in the national capital, with the subject likely to be a key issue when Assembly elections are held next year.