When Hurricane Maria slammed into Puerto Rico in September 2017 as a high-end category 4 storm, it left in its wake the largest catastrophe in the history of the island. Along with the human toll, the devastation impacted all the island’s wildlife, including a group of free-ranging rhesus macaques living on the isolated Cayo Santiago island near Puerto Rico. Now, a team of scientists has published one of the first results that shows the effects of natural disasters may have molecularly accelerated aging in the monkeys’ immune systems.