ORIGINS AND EXTINCTIONS

In addition to the Ethnologue website https://www.ethnologue.com/  and the UNESCO website on language diversity and endangered languages  http://www.unesco.org/new/en/indigenous-peoples/cultural-and-linguistic-diversity/ Jonathan Loh and David Harmon published a beautifully produced WWF report in 2014 entitled Biocultural Diversity (accessible at a number of sites such as  http://wwf.panda.org/wwf_news/?222890/Biocultural-Diversity-Threatened-Species-Endangered-Languages and http://mahb.stanford.edu/library-item/biocultural-diversity/) which is well worth reading and passing along.