Can brightening clouds buy us time to fight climate change?

Brightening Earth’s clouds so that they reflect more sunlight just might cool the planet — that is if we can figure out how to do it without causing any unintended harm. To test the theory out, a group of over 30 leading scientists have written up a research road map that was published in the journal Science Advances yesterday.

Some environmental advocates oppose solar geoengineering altogether, saying the uncertainties are too great and that climate solutions need to focus on preventing greenhouse gas emissions causing climate change. Scientists are even more unsure of the effects of marine cloud brightening than they are of stratospheric aerosol injection. So it’s no surprise that the authors of the new MCB paper want to proceed with caution.

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Scientists detail research to assess the viability and risks of marine cloud brighteningAs the levels of greenhouse gases in the atmosphere continue to increase and climate change impacts become more costly, the scientific community is redoubling efforts to investigate the potential risks and benefits of artificially shading Earth's surface to slow global warming.
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