Solar geoengineering — the idea of cooling the planet by deflecting the sun’s rays — is so risky that scientists and policy experts can’t even agree on whether to research it.

This episode was produced by Avishay Artsy, edited by Matt Collette and Amina Al-Sadi, fact-checked by Laura Bullard, engineered by Paul Robert Mounsey, and hosted by Noel King.

Transcript at vox.com/todayexplained

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