Back to today’s briefing

Story perspectives

Harvard Study Reveals Risks of Stratospheric Aerosol Injection

2/12/2025

33 4

Summary

Story summary

Stratospheric aerosol injection (SAI) could be a game-changer in the fight against global warming, reflecting sunlight to cool our planet. However, this ambitious geoengineering strategy raises concerns about unforeseen risks and governance. Harvard's latest research reveals that in low-pollution areas, the sky's color and brightness changes might be more striking than the expected whitening effect.

1 of 1

Story summary

Stratospheric aerosol injection (SAI) could be a game-changer in the fight against global warming, reflecting sunlight to cool our planet. However, this ambitious geoengineering strategy raises concerns about unforeseen risks and governance. Harvard's latest research reveals that in low-pollution areas, the sky's color and brightness changes might be more striking than the expected whitening effect.