This company says it can help cool the planet for $10 billion a year; scientists are raising red flags

One company has a simple-sounding plan to help save the planet: take a food additive and the mineral that makes eggshells hard, produce tiny particles out of them, spray them into the atmosphere and cool the world. Stardust Solutions, an Israeli-US company founded in 2023 and led by two former Isra...

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