We are raiding the Audio Long Reads archives and bringing you some classic pieces from years past, with new introductions from the authors. This week, from 2016: The discovery of Hawaii Sign Language in 2013 amazed linguists. But as the number of users dwindles, can it survive the twin threats of globalisation and a rift in the community? By Ross Perlin. Help support our independent journalism at
theguardian.com/longreadpod