Interview with one of the developers of Interslavic: the constructed language used in "The Painted Bird" which aims to be mutually intelligible with all Slavic languages.

I saw an interesting discussion about this language here (regarding this video) and the number of speakers of different languages in the comments saying they could decently understand the Interslavic in the video was impressive. It will be interesting to see if this language can have broader success in helping people communicate.