Cloud-seeding trial to clear New Delhi's smog

Indian authorities on Tuesday carried out a cloud-seeding experiment over smog-choked New Delhi in an attempt to induce rainfall and clear the city's toxic air, which has sparked anger among residents.

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A plane sprayed chemicals into clouds over some areas of the Indian capital to encourage rain and wash pollutants from the air, which remained in the "very poor" category, according to air quality monitors.

Cloud seeding - a weather modification method that releases chemicals into clouds to trigger rain - has been used in drought-prone regions, such as the western United States and the United Arab Emirates, though experts say its effectiveness remains uncertain.