Moving animal groups display remarkable feats of coordination. This coordination is largely
achieved when individuals adjust their movement in response to their neighbours' …

Mobile animal groups provide some of the most compelling examples of self-organization in
the natural world. While field observations of songbird flocks wheeling in the sky or anchovy …

Social organisation in animals takes many forms. It includes assemblages of territorial
animals, dominance hierarchies and social groups, among other things. The basic tenet that …

Group formation in living systems typically results from a delicate balance of repulsive,
aligning, and attractive interactions. We found that a mere motility change of the individuals …

Within a simple model of attractive active Brownian particles, we predict flocking behavior
and challenge the widespread idea that alignment interactions are necessary to observe this …

Inspired by astonishing collective motions and tactic behaviors in nature, here we show
phototactic flocking of synthetic photochemical micromotors. When enriched with hydroxyl …

Modeling crowd motion is central to situations as diverse as risk prevention in mass events
and visual effects rendering in the motion picture industry. The difficulty of performing …

Collective behavior in biological systems is a complex topic, to say the least. It runs wildly
across scales in both space and time, involving taxonomically vastly different organisms …

Among the many fascinating examples of collective behavior exhibited by animal groups,
some species are known to alternate slow group dispersion in space with rapid aggregation …

The multicellular organization of diverse systems, including embryos, intestines, and tumors
relies on coordinated cell migration in curved environments. In these settings, cells establish …