SMRTR Science & EngineeringOct 30, 2025Interesting Engineering

Earth-cooling spray could backfire, scientists warn of risky geoengineering

SMRTR summary

Scientists warn that solar geoengineering, which involves spraying particles into the atmosphere to cool Earth by reflecting sunlight, could backfire despite promising computer simulations. Columbia University researchers found that real-world challenges including political hurdles, supply chain limitations, and unpredictable particle behavior make this climate solution far riskier than previously thought.

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