Karl Fogel at
Yet another great mathematical-result-explained-for-the-non-specialist piece by @EricaKlarreich:
https://www.quantamagazine.org/math-invariants-helped-lisa-piccirillo-solve-conway-knot-problem-20200602/
(My 2020 wish: the @NYTimes decides to have a Numeracy Editor, offers her the job, and she takes it. Low chance, but one can hope? https://www.rants.org/2019/04/proposing_a_numeracy_editor/)