In When Languages Die, K. David Harrison illustrates the individual face of language loss, as well as its global scale. Languages are the accretion of thousands of years of a peopleʼs science and art - from observations of ecological patterns to creation myths. The author shows that the disappearance of a language is a loss not only for the community of speakers itself but also for our common human knowledge of mathematics, biology, geography, philosophy, agriculture, and linguistics. In this century, we face a massive erosion of the human knowledge base. The global abandonment of indigenous languages will bring a massive loss of accumulated knowledge and culture - this book argues for the irreplaceable nature of these unique knowledge systems and the urgency of documenting them before they are lost forever. Book jacket. Includes information on Australia, calendars, creation myths, directions, epics, fish, folksonomy, genetics, grammar, Himalayan mountains, horse, indigenous people, knowledge, literacy, maps, metaphor, months, naming, nomads, oral traditions, Os (middle Chulym), Papua New Guinea, place names, reindeer, rivers, shamans, sign languages, singing, song, species, taxonomy, units of time, time reckoning, Tofa (Tofalar, Karagas), Tuvan, writing systems, Yukaghir, etc.