I saw this article online about the Indonesian tribal language Dusner being on the verge on extinction. There are only 3 people left in the world who speak the language who are all in their 60s and 70s. They were all recently injured in a natural disaster but thankfully survivied. Linguists at Oxford Uni are now trying to protect the language.
Have a look at one version of the story here: http://www.straitstimes.com/BreakingNews/TechandScience/Story/STIStory_661278.html
This might make a good topic for a lesson. You could use the text as an authentic reading exercise. Extention tasks could range from an interview with the survivors, a diary of one of the speakers, or a debate on languages. Eg, Will English ever be the world’s only language? Is there a link between language and culture? English is the most important language in the world. It is important to learn several languages etc….
Just thought this text would make for a nice lead in to a discussion. Please let me know what you think and how it went if you use this in your lessons.