The History of English Podcast: Episode 117: What’s In a Name? http://historyofenglishpodcast.com/2018/10/16/episode-117-whats-in-a-name/ This is an excellent description of the history of English names and surnames. An absolute essential for understanding and teaching forms of address and register.
http://www.archaeology.org/news/5197-170112-baboons-vowels-speech Learning about the origins of human speech is informative for second language acquisition endeavors. This article gives great insights into the motives for speech and language functions.