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In this photograph taken on August 13, 2012, Nepalese Gyani Maiya Sen, 76, poses for a photo at her home in the remote district of Dang in western Nepal. As Gyani Maiya Sen nears the end of her life she worries that her final words may the last ever spoken in her mysterious mother tongue. The 76-year-old, part of a vanishing tribe in remote western Nepal, is the only surviving speaker of Kusunda, a language of unknown origins and unique sentence structures that has long baffled experts. UNESCO lists 61 of Nepal's languages as endangered, meaning they are falling out of use, and six, including Kusunda, as "critically endangered". AFP PHOTO/ STR (Photo credit should read STR/AFP via Getty Images)

In this photograph taken on August 13, 2012, Nepalese Gyani Maiya Sen, 76, poses for a photo at her home in the remote district of Dang in western Nepal. As Gyani Maiya Sen nears the end of her life she worries that her final words may the last ever spoken in her mysterious mother tongue. The 76-year-old, part of a vanishing tribe in remote western Nepal, is the only surviving speaker of Kusunda, a language of unknown origins and unique sentence structures that has long baffled experts. UNESCO lists 61 of Nepal's languages as endangered, meaning they are falling out of use, and six, including Kusunda, as "critically endangered". AFP PHOTO/ STR (Photo credit should read STR/AFP via Getty Images)
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