Footage from the field (VIDEO) Northwestern University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption B-roll of Professor Alessandro Rotta Loria and his Ph.D. student Anjali Naidu Thota placing temperature sensors throughout subterranean Chicago. Credit Annie Speicher/Media & Technology Innovation/Northwestern University Usage Restrictions Add credit License Original 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.