Mariano Cortez (from Argentina) and Chelsea Nix (from the United States) are a husband and wife travel photography team published in National Geographic and recognized in the International Photographer of the Year Photography Awards, National Geographic’s Travel Photographer of the Year Contest, Chromatic Awards, among others. Cortez and Nix have exhibited their work in galleries around the world including New York City, Athens, Barcelona, Paris and organized public exhibitions in the USA, India, Kenya, Italy, Spain and Mexico. The photographers are recurring international judges in the Chania International Photo Festival held annually in Greece. They have also contributed photographs to Ted Talk and National Geographic's educational books. 

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Their exhibition of THE STRING PROJECT®  won one of the largest and most attended international art competitions in the world called ArtPrize, located in Grand Rapids, Michigan. Around half a million people visit and nearly 1,500 artists participate from over 40 countries. In 2018, this photography exhibition received the public’s Grand Prize Award, the Latino Award, and the 2D Category Award. It was the first time in the history of the competition that a photography piece had, and has ever, taken home the Grand Prize Award. Their achievements have been published internationally and nationally in major newspapers like The New York Times, the Chicago Tribune, and the Business Insider. They have been invited to discuss their travels and winnings on different TV stations and for the National Public Radio (NPR).