2. sewer 2 TalTech PIPEON (IMAGE) Estonian Research Council Caption 1.-2. Working in sewers presents a myriad of technological challenges. There are currently no robots that can work without direct human intervention and last for a long time in such a featureless, harsh environments. Credit PIPEON, Simon Tait, University of Sheffield & TalTech Usage Restrictions Please credit the images. 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.