Oriented toward Clojure, but I think it doubles as a nice piece on different data structures & how to use them, and Doing Things with Functional Programming.  https://purelyfunctional.tv/guide/clojure-collections/

http://michaelfeathers.typepad.com/michael_feathers_blog/2011/05/the-carrying-cost-of-code-taking-lean-seriously.html

My friend gave this lecture!  https://www.youtube.com/watch?v=cx1l65kOtrg

https://theintercept.com/2018/06/25/att-internet-nsa-spy-hubs/

https://www.businessinsider.com/super-kamiokande-neutrino-detector-is-unbelievably-beautiful-2018-6