Photo by @edkashi / Santos Felipa Abad de Arismendis, 57, lost her son, Frank Jairzinhio Arismendis Abad, 33, last year from CKDu, or chronic kidney disease of unknown etiology. Arismednis lives in Talara, Peru, and her son worked part-time at the docks from 11 to 16 years old when he began to suffer from a kidney-related illness. At 24 years old, he was diagnosed with CKDu and was placed on dialysis. To receive his treatment, he had to travel to Piura, three hours from his home. After heavy rains one day, the road became impassable and he missed his dialysis and died. | These images are being shared in celebration of the 2018 National Geographic Explorers Festival, which brings together innovative scientists, conservationists, explorers, and storytellers from around the world to share their discoveries, insights, and solutions for creating a more sustainable future. To showcase the work of this community, @Cara_Santa_Maria —an award-winning science journalist, the creator of the popular podcast “Talk Nerdy,” and a correspondent on National Geographic’s Explorer television program—has selected six images from photographers who are also National Geographic Explorers. Learn more about the Explorers Festival and watch a livestream at natgeo.com.