Pune, Nov 3 (PTI) The recent cloud seeding trials in New Delhi were purely an experiment, Ministry of Earth Sciences Secretary M Ravichandran has said, stressing that such tests are essential to assess their feasibility before making them operational.

Such experiments can end in success or failure, he said on Sunday.

Ravichandran was at the Indian Institute of Tropical Meteorology in Pune to attend the 11th WMO Scientific Conference on Weather Modification.

Last month, the Delhi government, in collaboration with IIT Kanpur, conducted cloud seeding trials in parts of the national capital to ease the city’s air pollution crisis.

However, the Opposition Congress has criticised the move, saying getting a slight improvement in a limited area for a day or two, as is now being claimed, is a “

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