As a communication system, human language is uniquely diverse and exhibits remarkable variation in both form and meaning across speech communities in space and time. This fact makes the languages of the world a rich observatory for exploring what is possible in human language and what is not. The Lund Language Diversity group pursues a number of research fields, including linguistic typology, anthropological linguistics, documentation and description of lesser known languages, and the prehistory of languages. The research programs represented in the group develop and apply innovative techniques and methodologies of data collection, analysis, and archiving. Field-based research takes place in East and Southeast Asia, New Guinea, Greenland, Caucasia, Europe and the Americas.