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Stardust Aims to Cool Earth with Atmospheric Particles

11/25/2025

24 5 Full Breakdown

Summary

Story summary

Stardust, a US-Israeli startup, plans to deploy millions of particles into the atmosphere to reflect sunlight and potentially reduce global temperatures by 2°C within two years.
The approach is inspired by volcanic eruptions.
It has not been fully tested.
Critics warn it could trigger severe weather changes, including droughts and hurricanes.
The particles would be environmentally safe because they would eventually return to Earth.

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Story summary

Stardust, a US-Israeli startup, plans to deploy millions of particles into the atmosphere to reflect sunlight and potentially reduce global temperatures by 2°C within two years.
The approach is inspired by volcanic eruptions.
It has not been fully tested.
Critics warn it could trigger severe weather changes, including droughts and hurricanes.
The particles would be environmentally safe because they would eventually return to Earth.