Sunset over Arctic Sea Ice (image) Harvard University Caption This shows a sunset in the Arctic. A new study at Harvard explores the feasibility of using cautious and targeted solar geoengineering to counter the loss of Arctic sea ice. Credit File photo courtesy of NASA/Kathryn Hansen. Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.