Two Penn State Berks engineering students are tackling the issue of plastic waste by using it as filament for 3-D printers. Their team, Trimatis, is one of six finalists competing in this year’s Inc.U competition, sponsored by Penn State’s Pennsylvania Technical Assistance Program (PennTAP). The finalists earned a spot on WPSU’s "The Investment" television show where they will pitch their ideas in a "Shark Tank"-style format to a panel of judges for a chance to win investment funding. The show will air on WPSU-TV on April 7.