Can the microbes in fracking wastewater actually be put to use treating that wastewater? Angela Hartsock of the National Energy Technology Lab discusses her work this Friday (March 30). Her talk: “Microbes in Water Used for Hydraulic Fracturing of Deep Shale for Natural Gas Extraction.” It’s a free public seminar sponsored by the Environmental Science Graduate Program. 244 Kottman Hall, 2120 Fyffe Road, on our Columbus campus. Video link to 121 Fisher Auditorium, 1680 Madison Ave., at OARDC in Wooster. Info: 614-292-9762.