What's up in

# swarm intelligence

## How Complex Wholes Emerge From Simple Parts

Throughout nature, throngs of relatively simple elements can self-organize into behaviors that seem unexpectedly complex. Scientists are beginning to understand why and how these phenomena emerge without a central organizing entity.

## The Simple Algorithm That Ants Use to Build Bridges

Even with no one in charge, army ants work collectively to build bridges out of their bodies. New research reveals the simple rules that lead to such complex group behavior.

## The Remarkable Self-Organization of Ants

Knowing the rules behind ant-made structures could help scientists understand how other complex systems emerge in nature.