(aka the Underworld renovation project)
Underworld is our parallel, particle-in-cell, finite element geodynamics code [1]. For the past year or so, the Underworld team has been working on a refurbished user interface. We've known for a long time that it needed to be done but we finally bit the bullet.
This is a companion discussion topic for the original entry at https://www.underworldcode.org/articles/underworld-2/