Scientists at Columbia University are raising serious concerns about a controversial idea – dimming the sun to fight global warming. The technique, known as Stratospheric Aerosol Injection (SAI), mimics volcanic eruptions by scattering sunlight-reflecting particles into the upper atmosphere. While hundreds of models suggest it could lower Earth’s temperature, Columbia researchers now warn that SAI might cause unintended global side effects – from disrupted monsoons to economic and political chaos. Their study argues that solar geoengineering remains deeply uncertain and dangerously complex. Watch to understand why this ‘sci-fi’ solution could trigger real-world turmoil.
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