News Controlling delayed dynamics: advances in theory, methods and applications IUTAM Symposium on Dynamics and Interface Phenomena of Bubbles and Droplets at Multiple Scales Modelling oceanic internal waves and their impact on offshore structures Ultralarge-scale Topology Optimization Particles, drops and bubbles in stratified environments Data-Driven Mechanics Computational methods for large-scale and complex wave problems Instability and bifurcation of solids including coupled field phenomena Generalized continua emerging from microstructures Interface mechanics of complex flows and soft matter 1 2 3