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The Intellectual Ventures Stratoshield “Hose in the Sky”

Bill Gates’ “Stratoshield” would later be reborn and readied for a test flight in 2018 as David Keith’s “Stratocruiser.”

Called a Stratospheric Shield, or StratoShield for short, the system would deliver sulfur dioxide to an altitude of 30 kilometers in liquid form, through a very long hose supported by large, long-duration balloons. At the top of the hose, a series of atomizers would disperse the liquid into a fine mist of aerosol particles, each about 100 nanometers in diameter.

Solar Radiation Management

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