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In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations arent keeping up.

In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations aren't keeping up.

In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations aren't keeping up.

In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations aren't keeping up.

In a parking lot and on San Francisco Bay, NPR witnesses two different tests for solar geoengineering to tackle climate change. With much science unsettled, experts say regulations aren't keeping up.

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After facing backlash from its balloon launches in Mexico, geoengineering startup Make Sunsets moved its experiments to the US. The startup says it got “OKs to launch” from officials, who didn’t corroborate those claims.

Hilary Beaumont Last February, two balloons that were launched from Reno, Nevada, flew to Northern California. Along the way, as planned, they

‘Move fast, break things’ approach runs into issues of tribal authority.

In this episode, we ride along in the world's largest flying laboratory and see the dire stakes surrounding a drastic step to curb climate change.