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How does cloud seeding work to clear pollution?
Cloud seeding involves introducing chemicals into the atmosphere to encourage cloud formation and induce rain. In Delhi's case, aircraft release substances like silver iodide to stimulate rainfall, which can help wash away pollutants from the air. The idea is that rain can clear particulate matter and other pollutants, temporarily improving air quality during critical pollution spikes.
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Is artificial rain effective for pollution control?
The effectiveness of artificial rain through cloud seeding varies globally and depends on weather conditions, cloud availability, and the chemicals used. While some regions have seen short-term improvements, cloud seeding is not a guaranteed or long-term solution. Experts warn that its impact on pollution levels is often limited and unpredictable.
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What are the risks and benefits of cloud seeding in Delhi?
The potential benefits include temporary reduction in air pollution and relief during severe smog episodes. However, risks involve environmental concerns over chemical use, uncertain long-term effects, and the possibility of unintended weather changes. Critics also argue that cloud seeding might distract from more effective, sustainable pollution control measures.
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Could other cities adopt similar methods?
Yes, cloud seeding has been tested in various countries for weather modification and drought relief. Cities facing severe pollution could consider it as part of a broader strategy, but success depends on local climate, infrastructure, and scientific validation. Most experts recommend it only as a supplementary measure alongside pollution reduction policies.
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Is cloud seeding a permanent solution for pollution?
No, cloud seeding is not a permanent fix. It offers only a temporary reduction in pollution levels and does not address the root causes like vehicle emissions, industrial pollution, or crop burning. Long-term improvements require systemic reforms and stricter environmental policies.
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What do scientists say about cloud seeding's effectiveness?
Scientists are divided. Some see it as a promising tool with potential benefits in specific situations, while others warn that its results are inconsistent and scientifically uncertain. Many emphasize that more research is needed to understand its environmental impacts and to optimize its use for pollution control.