This session, which is now a classic of EGU General Assemblies, was established many years ago with the fundamental contribution of Giovanni Lapenta, who sadly passed away in May 2024. This year, we conveners want to use this session to remember him through works in the many fields he contributed to during his extremely productive and versatile career: development of numerical methods for plasma simulations, nonlinear processes in space and laboratory plasma (magnetic reconnection, turbulence and shocks), particle heating and acceleration in the heliosphere, application of Machine Learning methods to space physics problems. Theoretical, observational, and numerical works, especially those highlighting the interconnection between nonlinear processes in plasmas, are welcome, along with those on new numerical methods and data analysis techniques.