Could blocking the sun help reverse climate change? Scientists say maybe, thanks to solar geoengineering. The emerging solution is designed to cool the Earth and prevent catastrophic warming. Despite ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. If you’re in the ...

Picture this: As a Phoenix heat wave is killing hundreds of people, an entrepreneur approaches the city’s mayor with an extraordinary offer. The company will spray enough aerosols into the sky to ...

Posts from this topic will be added to your daily email digest and your homepage feed. Solar geoengineering is a controversial strategy for cooling down the planet. Researchers want to know if it can ...

It's possible to start a subscale deployment in just a few years. The climate effects would be tiny, but the geopolitical impact could be significant. For half a century, climate researchers have ...

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 ...

Investment firms have put over $100 million into developing risky technologies that could cool the planet with unknown side ...

The global community’s efforts to reduce greenhouse gas emissions are faltering and the world is getting hotter. On its current trajectory, the world is unlikely to meet the limits it set for itself ...

From top left clockwise: Mohammed Usrof is founder of the Palestinian Institute For Climate Strategy. Disha Ravi is co-founder of Fridays For Future India. Heleen Bruggink is co-founder of Mind Our ...

Posts from this topic will be added to your daily email digest and your homepage feed. Countries tried and failed to establish tougher ground rules for solar geoengineering. Countries tried and failed ...