New Delhi, Dec. 24 -- The Delhi High Court on Wednesday expressed strong displeasure over the apparent lack of concrete action by authorities to address the worsening air pollution crisis and questioned the continued levy of 18 per cent Goods and Services Tax (GST) on air purifiers despite the prevailing public health emergency.

The court was hearing a public interest litigation filed by advocate Kapil Madan, seeking recognition of air purifiers as medical devices and a corresponding reduction in GST. Senior Advocate Arvind Nayar appeared on behalf of the petitioner.

During the hearing, the Court expressed dissatisfaction with what it described as inaction on the issue, noting that the State has a duty to ensure clean, breathable air fo...