K. David Harrison, a National Geographic Society fellow, travels around the world to interview last speakers of nearly extinct tongues. He is a leading spokesman for endangered lan...lihat lebih banyakK. David Harrison, a National Geographic Society fellow, travels around the world to interview last speakers of nearly extinct tongues. He is a leading spokesman for endangered languages and co-stars in the Sundance documentary film The Linguists. Harrison received his doctorate from Yale University, is currently an associate professor of linguistics at Swarthmore College, and resides in Philadelphia.lihat lebih sedikit