Madrid,18th July 2024. The annual meeting of the newly launched COST Action ‘NEXT’ has been held at IMDEA Nanociencia institute in Madrid, 8-12th July. The main goal of NEXT is to promote the development and application of advanced non-linear extreme ultraviolet (EUV) to X-ray spectroscopic and imaging techniques, enabled by Free Electron Laser (FEL) facilities and lab-based High-order Harmonic Generation (HHG) sources . . .