Ant nests become increasingly 'younger' as they age

Ant colonies, specifically the western harvest ant, exhibit negative aging, meaning older nests grow and reproduce more effectively than younger ones. This phenomenon contrasts with most organisms, which typically decline with age. Research conducted on 3,285 nests in Colorado shows that these colonies can produce more queens as they age, enhancing their reproductive success. The study highlights the colony as a superorganism, where the queen's longevity and the workers' short lifespan contribute to the colony's overall vitality. Despite the queen's potential for extended life, the colony's survival depends on her limited sperm supply, making it ultimately mortal.