Proceedings of the Geo-Shanghai 2014 International Conference, held in Shanghai, China, May 26-28, 2014. This Geotechnical Special Publication contains 22 technical papers addressing new frontiers in current geotechnical engineering research and practice. GSP 243 focuses on beahvoir of biotreated geomaterials and foundations, energy-related geotechnics, and sustainability, geoinformatics, and case studies.