Add Yahoo as a preferred source to see more of our stories on Google. The west coast of North America is one area the Marine Cloud Brightening Program has considered for a 3,900-square mile solar ...

Vast sums of private and public money are now chasing a once-fringe idea: deliberately reflecting a slice of sunlight back ...

We must not let geoengineering be shaped behind closed doors. Climate justice demands an inclusive approach ...

A controversial attempt to test solar geoengineering technology in California was abruptly shut down earlier this year after city officials discovered the experiment had been kept secret — despite ...

The potential role of solar geoengineering strategies in addressing global warming is a matter of current scientific and societal debate. Some strategies could reduce the surface temperature of Earth, ...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. Solar geoengineering startups are getting serious Solar ...

SALT LAKE CITY — You can see them in the sky, the airplanes carrying customers or cargo. But maybe these planes are doing something else: spraying chemicals to bounce the heat of the sun back into the ...

Reusable rockets that deliver sun-reflecting aerosols to the top of the stratosphere could cool the planet – with fewer negative side effects than lower-altitude solar geoengineering. But a fleet of ...

The tiny startup Make Sunsets, which had been experimenting with releasing sulfur dioxide into the atmosphere to reflect sunlight in order to cool the earth, said Wednesday it would cease operations ...

EPA is pressing a solar geoengineering firm that sells “cooling credits” to provide the government with more details about its operations. The environmental agency sent a letter requesting details ...

A secretive team of scientists is working on an unprecedented plan to fill the atmosphere with tiny particles that imitate a volcanic eruption and block out the sun. It might save humanity, or it ...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. Why the for-profit race into solar geoengineering is bad for ...