Scientists aim to dim sunlight to fight climate change: Report
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Apr 23, 2025
Scientists are set to launch a series of experiments to dim the Sun by creating more reflective clouds within the coming weeks.
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Scientists are launching experiments to dim sunlight in order to fight climate change
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The Telegraph reports researchers will perform outdoor tests within weeks, including brightening clouds to reflect sunlight using aerosols
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The research aims to find new ways to prevent the warming of the planet due to climate change
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The studies follow decades of scientists observing unusually bright clouds above shipping routes
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Researchers discovered the pollution from the sulfur-burning vessels caused the clouds above them to become more reflective of sunlight
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dimming and cooling the area around them. The experts are building on these findings
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The UK's Advanced Research and Innovation Agency is dedicating tens of millions of dollars to these experiments
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The program director says the agency will be making announcements on who will get the funding and when outdoor tests will take place in the next few weeks
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He says one of the crucial pieces missing from current data is real-world physical experimentation
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arguing computer-generated information can only provide limited insights. Researchers promise the experiments will be safe and face stipulations including a ban on releasing toxic chemicals into the air Critics however warn artificial control of the environment may actually make climate change worse and distract from the
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true goal of lowering greenhouse gas emissions. While scientists involved in the research contend
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the experiments are vital because emissions aren't dropping fast enough, the World Meteorological
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Organization reports global greenhouse gas emissions reached a record high last year
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and show no sign they've hit their peak. Researchers are focusing on tests involving sunlight reflection models
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involving the release of tiny particles into the air to reflect sunlight and marine cloud brightening
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where ships spray sea salt particles into the atmosphere, increasing the cloud's brightness to reflect more sunlight
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Other methods include seeding some high-altitude clouds to cool the Earth by allowing heat to escape into space
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Scientists say these clouds currently trap heat. Researchers say if the experiments are successful, we may see these methods employed within the next decade
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For more on this story, download the Straight Arrow News app or visit san.com
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For Straight Arrow News, I'm Jack Elmer
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