In public health, you don't see what you don't look for. So polio and other disease hunters run vast surveillance operations. In this issue of Rotary magazine, we take you to a largely hidden frontline in the fight against polio. Learn how this detective work is done, including its decidedly unglamorous side (one key to helping ensure a polio-free world is poop). Then, be part of history and help us build awareness on World Polio Day on 24 October. Click here to read the October 2023 issue. The link will take you to your digital copy, which you can read using any common web browser. This past July saw the hottest global average temperature in about 125,000 years, according to scientists. In another of this month's features, we take stock of a season of heat, fire, and floods, and how Rotary members are responding to aid victims of climate disasters. And finally, we bring you two stories — one in photos, one in words — celebrating Rotary Youth Exchange, which has been promoting international understanding for nearly 50 years. Three students share their exciting year in Brazil. And journalist Sharon Basco reflects on the youth exchange that helped launch her career. | 
