For years, scientists have wondered how fire ants, whose bodies are denser than water, can survive floods that should destroy them. How do entire colonies form themselves into life rafts that can float for weeks? A Los Angeles Times article explained that engineers from the Georgia Institute of Technology discovered that tiny hairs on the ants’ bodies trap air bubbles. This enables thousands of the insects, “which flounder and struggle in the water as individuals,” to ride out the flood when they cling together.