Julia Yan and Sarah Beth Gleeson
BaleenaBaleena, based in Philadelphia, PA, is a materials engineering startup dedicated to eradicating microplastic pollution in the fashion industry, starting with individuals. Founded by University of Pennsylvania engineers Julia Yan and Sarah Beth Gleeson, Baleena’s cutting-edge filters, inspired by nature’s sea sponges, seamlessly integrate into washing machines to capture harmful microplastic fibers during laundry. What began as a senior capstone project has grown into a pioneering effort led by an all-female team committed to environmental sustainability.