Ed Kashi -- photojournalist, filmmaker, educator, and member of VII Photo -- has dedicated his career to documenting social and political issues all over the world. In 2013, Kashi traveled to Nicaragua to document the epidemic of Chronic Kidney Disease of Unknown origin (CKDu) that has been decimating sugarcane workers in the country for the last few decades. He then went back in 2014, after successfully completing a crowd-funding campaign with the purpose of expanding his photographic work on the topic and adding a video component. SDN talked to him about his work in Nicaragua, his first crowd-funding campaign and how he sees photojournalism changing, from Instagram to other opportunities -- and challenges -- lying ahead..