Mysterious sea open during the Antarctic winter. Now scientists know why.
[ad_1] A polynya in the Weddell Sea in Antarctica. Credit: Wolfgang Kaehler / LightRocket via Getty Images Cyclones create an ice-free expanse of sea that opens regularly during the cold Antarctic winters. The sea ice in Antarctica is the thickest in winter, so the appearance of open water is disconcerting. These open seas are called … Read more