Fire ants, evolving for 150 million years, thrive worldwide. Solenopsis invicta has spread across 13 U.S. states, causing billions in damage, while scientists study their secrets of survival in the lab.

Fire ants, evolving for 150 million years, thrive worldwide. Solenopsis invicta has spread across 13 U.S. states, causing billions in damage, while scientists study their secrets of survival in the lab.