Rapper Prodigy, shown above performing in New York City, published his debut novel, H.N.I.C., in 2013. Mike Lawrie/Getty Images hide caption

itoggle caption Mike Lawrie/Getty Images

Many institutions have their archives stored on CDs — but the discs aren't as stable as once thought. There is no average life span for a CD, says preservationist Michele Youket, "because there is no average disc." Sarah Tilotta/NPR hide caption

itoggle caption Sarah Tilotta/NPR