Robots' Path (IMAGE) University of Washington Caption This shows the robots' paths around Antarctica. Dark gray is land, and light gray is sea ice. Instruments colored dark orange in the 'Antarctic Southern Zone' found higher-than-expected outgassing of carbon dioxide. Credit Alison Gray/University of Washington Usage Restrictions Photo credit required. 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.