How a change in rice farming unexpectedly made India’s air so much worse: No one anticipated that an initiative to save groundwater by delaying the annual rice season would aggravate northern India’s already miserable air pollution. - "Some scholars have shown how crop burning releases black carbon, a greenhouse gas even more effective than carbon dioxide at absorbing light and warming the atmosphere. Some scientists, and even the Indian government, have found that black carbon, commonly known as soot, is falling onto the glaciers of the Himalaya Mountains, heating the surface and quickening the melting."
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