Terry Tao proposes ideas for solving Navier-Stokes. May have to set up a new discussion thread for this -- will edit this if it goes anywhere.
https://www.quantamagazine.org/terence-tao-proposes-fluid-new-path-in-navier-stokes-problem-20140224/

> "... the Navier-Stokes equations of fluid flow, which physicists use to model ocean currents, weather patterns and other phenomena. "

His latest Navier-Stokes post was last week:
https://terrytao.wordpress.com/2019/08/15/quantitative-bounds-for-critically-bounded-solutions-to-the-navier-stokes-equations/