Fenella France, chief of preservation research and testing at the Library of Congress, and her colleagues are trying to determine how compact discs (CDs) age in order to preserve them. The Atlantic reports that researchers are experimenting on non-library CDs so as to identify how best to care for library collections. Some specimens are being put through \destructive aging tests.\ For example, two ostensibly identical music CDs were subjected to temperatures of 175 degrees and a relative humidity of 70 percent for 500 hours. Additionally, she explained that recordable CDs are more prone to complicated degradation issues while DVDs are less stable than CDs due to their higher data capacity.
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