The world’s largest scientific archive of animal signal recordings is housed at the Macaulay Library. The library is partnering with other institutions to curate and digitize an enormous archive of animal audio and video recordings from their vaults. The analogue material in the library’s collection includes recordings of birds, frogs, fish, and insects going back a few decades. Accessible digital audio recordings of these animal signals will make it easier for researchers to investigate a host of scientific questions. Part of the "Science Nation" series.