The video of the 21st G.A. Leonards Lecture "Engineering Frozen Ground: Understanding the Behaviour of Soil on Freezing and Thawing" given by Prof. Giulia Viggiani on April 11 is now available for viewing at https://youtu.be/QdOX1fw7tlY<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2FQdOX1fw7tlY&data=05%7C02%7Ccce-all-list%40ecn.purdue.edu%7C039742e2c06348681f3c08dda6b301f7%7C4130bd397c53419cb1e58758d6d63f21%7C0%7C0%7C638850009934900381%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=7jzOblE2Vbgp1T52WfZvzXlVfa0KPlPrZDCCPMRQSI0%3D&reserved=0> More information on the event and the Purdue Geotechnical Society Workshop on "Engineering the Ground: From Fundamentals to Applications" including PDF versions of presentation slides, abstracts and photos, can be found on our Website at https://engineering.purdue.edu/PGS<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fengineering.purdue.edu%2FPGS&data=05%7C02%7Ccce-all-list%40ecn.purdue.edu%7C039742e2c06348681f3c08dda6b301f7%7C4130bd397c53419cb1e58758d6d63f21%7C0%7C0%7C638850009934920120%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=L%2FlU%2BV%2F2de2L3qx2kymxck76%2BS0uQYPWCycgVS8GuoA%3D&reserved=0> Philippe Bourdeau Dr. Philippe L. Bourdeau, Life M. ASCE, M. SIA, USSD, ISSMGE Professor Emeritus of Civil Engineering Purdue University, Lyles School of Civil and Construction Engineering Hampton Hall, 550 Stadium Mall Drive West Lafayette, Indiana 47907-2051, USA Phone: (+1) 765 494-5025 (Geotechnical Secretariat), (+1) 765 491-8307 (Cell) Email: bourdeau@purdue.edu<mailto:bourdeau@purdue.edu> Purdue Geotechnical Society: visit https://engineering.purdue.edu/PGS