Hundreds of documents show how researchers failed to notify officials in California about a test of technology to block the sun’s rays — while they planned a much huger sequel.
Archived version: https://archive.is/20250728172625/https://www.politico.com/news/2025/07/27/california-sunlight-dimming-experiment-collapse-00476983
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Not necessarily disagreeing with your premise but the sun is slightly warmer right now.
The Sun has its own natural cycle of activity. But that has nothing to do with why the planet is warming.