There are whole subfields of language documentation, language revitalization, language reclamation, etc. There are conferences (ICLDC, Breath of Life, Language

There are whole subfields of language documentation, language revitalization, language reclamation, etc. There are conferences (ICLDC, Breath of Life, Language is Life just to mention three), journals (http://nflrc.hawaii.edu/ldc/ http://nflrc.hawaii.edu/ldc/), funding organizations, archives, PhD programs around the world… So, yes, there are efforts.