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Briefing: Diamonds are not a geoengineer's best friend: Carbon impurities provide a reality check

Strategic angle: Exploring the implications of carbon impurities in diamonds on solar geoengineering strategies.

Editorial Staff · March 23, 2026 · 1 min read

Solar geoengineering aims to cool the planet by reflecting sunlight.

Stratospheric aerosol injection (SAI) is a key strategy in this field.

Carbon impurities in diamonds challenge the effectiveness of SAI.