Work for our world. Join WWF. WWF is the world's largest conservation organization, founded in 1961. We are active in over 100 countries and have over 8000 employees. WWF Central and Eastern Europe are responsible for leading and, to a significant extent, implementing WWF’s efforts to preserve, restore and sustainably manage the natural values of the Danube Carpathian ecoregion, which we also call the Green Heart of Europe. With a team of over 200 highly specialised professionals, we are working across political borders through an ecoregional approach based on model projects, influencing policy, networking, capacity building, communication, and crisis response.