US Icebreaker N.B. Palmer (IMAGE) University of Texas at San Antonio Caption UTSA sea ice expert Stephen Ackley and Boerne, Texas High School Science Teacher Sarah Anderson join 22 international researchers on a two month expedition of Antarctica. The section they will be exploring has not been visited at this time in more than 100 years. Credit Brent Stewart Usage Restrictions None License Licensed content 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.