This week on You Oughta Know, meet a Philadelphia man on a mission to rescue greyhounds. Find out how to make the most out of every tank of gas. Learn about the legacy of love left by an elementary principal gone to soon. Visit a sensory-friendly gym for all kids. Discover a Philly subscription service that makes composting easy. Meet a woman who is helping to bridge the racial tech gap. Visit Franklin Court in celebration of new Ken Burns film.