The Georgia Institute of Technology (GIT) offers the latest example with its study of fire ant towers—structures that resemble the Eiffel Tower and are seemingly built without a leader or coordinated effort. "If you watched ants for 30 seconds, you could have no idea that something miraculous would be created in 20 minutes," says David Hu, a professor in Georgia Tech's School of Mechanical Engineering in a statement. "With no planning, and using trial-and-error, they create a bell-shaped structure that helps them survive."