Science Sunday!
I’ve mentioned Theodore von Kármán in passing previously, but only in the context of his influence on other folks. He was a hugely important scientist in his own right, though: he did massively important work on fluid flow (including air flow) and turbulence, especially in the supersonic realm.
This is a lecture from 2012 about von Kármán’s life and work.
Bonus: A discussion with Roger Penrose on “What is time?”