SDPB News Director Cara Hetland welcomes University of South Dakota Assistant Professor of Audiology Marni Johnson Martin. Martin talks about hearing conservation and the dangers of hearing loss due to excessive volume in iPods and other listening devices. She uses the mannequin "Lucy" to conduct tests during the program.
Dr. Johnson Martin demonstrates the mannequin in video clips here
Hetland also visits with Dustin Pratt who has developed Solid Rock Clothing, an eco-friendly t-shirt company.