Since 2006, members of EURAXESS Bulgaria have organized 13 European Researchers Nights (ERN), and have attracted several new consortium members with different profiles - universities, research institutes, NGOs, entrepreneurs. Based on past experience, the main goal of Researchers in the Knowledge Triangle (K-TRIO 5) project is to bring researchers closer to society, attract young people to STEM and boost Citizens Science. The project will contribute for increasing the number of researchers in Bulgaria by making the society, and young people, aware of excellent European achievements in research and innovation (R&I), and of the Centers of Excellence (CoE) and Centers of Competence and their contribution to green, smart and sustainable regional development. In 2020 the consortium made several steps for changing stereotypes and nurturing a new culture in R&I, and making young people aware of the multiple career paths of researchers (incl. MSC fellows), best-practice examples of researchers achievements, and research infrastructure in Bulgaria. Special emphasis will be made on European policy and on funding for R&I provided by EU RTD programs and Structural Funds. With a large variety of pre-events, online activities and 2-days ERN events in many Bulgarian cities, the project will create greater understanding on how R&I contribute to well-being of people and sustainable development, and highlight the common European efforts for Green and Digital transformation, building Smart Cities, and taking full advantage of BIG Data, Artificial Intelligence and Cloud computing. With the involvement of all CoE UNITe partners, and their large network, in addition to EURAXESS Bulgaria, K-TRIO 5 will cover all Bulgarian regions. Forum Science will guide a professional science communication, and ensure greater visibility of project activities.