A new report published July 29 in Science Magazine was conducted by scientists at the University of Wisconsin-Madison noting that the continent of Antarctica, especially the West Antarctic ice sheet, rather than Greenland, poses a greater concern in contributing to warmer and higher sea levels. As the globe continues to get warmer, sea levels have continuously risen at an average rate of 1.8 mm per year since 1961 as a result of thermal expansion and the melting of land-based ice.