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Could Freezing Arctic Sea Ice Combat Climate Change?

The year-round sea ice in the Arctic is melting and has shrunk by nearly 40 percent over the past four decades. Geoengineering companies such as Real Ice are betting big on refreezing it. That may sound ridiculous, impractical or risky—but proponents say we have to try. The U.K. government seems to agree, investing millions into experimental approaches such as Real Ice’s. Pulitzer Center Ocean Reporting Fellow Alec Luhn is taking us with him to the Arctic to see what it takes to freeze sea ice in the already freezing cold. Recommended reading: Read Luhn’s feature in the June 2025 issue of SciAm, which will be released on May 20: https://www.scientificamerican.com/au... Follow Luhn on Instagram @alecluhn_ (  / alecluhn_  ) and BlueSky @alecluhn.bsky.social (https://bsky.app/profile/alecluhn.bsk...) U.K. Funds Geoengineering Experiments as Global Controversy Grows https://www.scientificamerican.com/ar... Geoengineering Wins Reluctant Interest from Scientists as Earth’s Climate Unravels: https://www.scientificamerican.com/ar... Tell us what you think! Take our survey for the chance to win some SciAm swag! http://sciencequickly.com/survey  E-mail us at [email protected] (mailto:[email protected]) if you have any questions, comments or ideas for stories we should cover! Discover something new every day: subscribe (https://www.scientificamerican.com/ge...) to Scientific American and sign up (https://www.scientificamerican.com/ac...) for Today in Science, our daily newsletter.  Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper, Naeem Amarsy and Jeff DelViscio. This episode was hosted by Rachel Feltman. Our show is edited by Alex Sugiura with fact-checking by Shayna Posses and Aaron Shattuck. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices (https://megaphone.fm/adchoices)