TRIPODS+X Researchers (IMAGE) U.S. National Science Foundation Caption TRIPODS+X researchers David Shmoy (left) and Eoin O'Mahony (center) meet with Citi Bike employee Kelly Gowan in front of the Citi Bike station outside of Grand Central Station in New York City. Credit Cornell University 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.