Two one-act “Green Operas” are being presented Thursday, April 17 (7:30 p.m.) and Friday, April 18 (8:00 p.m.) at Stamps Auditorium in the Walgreen Theatre Center on North Campus by the Opera Studio program of the University of Michigan School of Music, Theatre and Dance. Green operas are produced with a focus on minimizing the resources required to produce a theatrical performance by using recycled materials for scenery and costumes, projected scenic elements, LED lights and other measures which can reduce the carbon footprint of a typical production by as much as 95%. The works themselves also focus on environmental themes: Rusalka’s Tale is a one act adaptation of the Dvorak opera presented in English, and L’enfant et les Sortileges by Maurice Ravel, presented in French with English supertitles both have plots that lend themselves to interpretations that illuminate the delicate relationship between man and nature. Both works are produced and directed by Robert Swedberg, collaborating with Timothy Cheek and Steven McGhee, Music Directors. Admission is Free.