This New York Times video shows how masses of fire ants can flow like a liquid or form resilient balls that bounce back like rubber. The ant footage was recorded by researchers at the Georgia Institute of Technology who are studying the physics of ants. The peculiar characteristics of the fire ants may prove useful in the development of self-assembling robots and self-healing materials. For more on the physics of ants, see the accompanying New York Times article.
video via The New York Times