The big POEMMA paper is finally out! It contains the science case, goals, and design of POEMMA, a twin-satellite experiment to detect the fluorescence and Cherenkov emission from extensive air showers triggered by ultra-high-energy cosmic rays and neutrinos in the atmosphere.

The POEMMA (Probe of Extreme Multi-Messenger Astrophysics) Observatory
A.V. Olinto et al.
https://arxiv.org/abs/2012.07945

My own small contribution was mainly on the opportunities for beyond-the-Standard-Model neutrino opportunities at ultra-high energies.