Active particles can form two-dimensional solids that are different from those formed by nonmotile particles, showing long-range crystalline order accompanied by giant spontaneous deformations.
Recent initiatives have improved diversity, equity, inclusion, and belonging in physics, but these efforts should be more equitably shared within the physics community.
Dissipation affects the time asymmetry of fluctuations in systems out of thermodynamic equilibrium. A newly discovered inequality elucidates that connection.