Delhi's Air Quality Improving, Sirsa Blames Punjab Stubble Burning for Pollution - New Delhi: Delhi Environment Minister Manjinder Singh Sirsa has criticized the Aam Aadmi Party (AAP) and its leaders, alleging ... Get Latest News on National only on lokmattimes.com. Sirsa specifically targeted the appointment of the Punjab Pollution Control Board (PPCB) chairperson, questioning the selection of a non-Punjabi and non-technical person for the role.