Rammed Earth (IMAGE) University of British Columbia Okanagan campus Caption Engineering professor Sumi Siddiqua (right) and graduate student Priscila Barreto (left). Credit UBC Okanagan 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.