Primedia Outdoor Joins e National Geographic Society for Endangered Species Day Global Out-of-Home Campaign

Johannesburg (Friday, May 18, 2018)—Beginning this Endangered Species Day (May 18), powerful images of species at risk from the National Geographic Photo Ark will be featured for a week on billboards in 22 countries and on every continent except Antarctica. This campaign, supported by more than 30 out-of-home operators, including Primedia Outdoor, is an effort…