Thank you, editors of The Times, for publishing The Associated Press article “Antarctica’s retreating ice may transform Earth” in Saturday’s edition, Page 3D. What an understatement! After reading the article about the work of Harvard geophysicist Jerry Mitrovica, I was compelled to study further: I read the 2007 Intergovernmental Panel on Climate Change report on land-based ice sheets and glaciers as related to future sea ice melting and resultant local coastal sea level rises and flooding. This report drove me to study data on the West Arctic Ice Sheet and the Greenland Ice Sheet.