Five learners from Worcester Gymnasium recently received silver medals for their projects presented at the Eskom Expo for Young Scientists, which marked 36 years of excellence in Science, Technology, Engineering, Mathematics and Innovation (STEMI). The Eskom Expo competition encourages and rewards excellence in scientific research, technological innovation, education, capacity building and science communication. From left are Mari Pretorius, Neill Finn, Cavin Myburgh, Lené Burger and Jané van Eck.Photo: