European Researchers' Night (ERN) in Malopolska 2021 (Malopolska Researchers' Night) will be organised for the 15th time in our region. The event will be held in the hybrid formula (online and stationary activities) to response the participants needs and current pandemic situation. Such formula enable to attract larger group of people. Scale of the event is huge to show the wide scientific heritage and achieve project's goals: 8 cities of the Malopolska Region (Krakow, Tarnow, Nowy Sacz, Niepolomice, Oswiecim, Skawina, Chrzanow and Limanowa), approx. 60 locations in ca. 35 partner institutions (both those included in the project consortium and other partners involved in the ERN in Malopolska), approx. 1,800 different activities (including e.g. interactive workshops, demos and experiments, face to face meetings with researchers, science shows etc.) prepared by over 2,000 researchers, R&D employees and students in cooperation with 80 science clubs. ERN 2021 will be organized under the slogan "Researchers are changing our world". Particular emphasis will be placed on the role of researchers in the fight against various environmental threats, as well as against air pollution (incl. smog and climate changes) - they will share their discoveries with the ERN participants that aim to save our planet (incl. activities related to European Green Deal). An important distinction of the ERN among other events is that we focus 100% on interactivity. During the ERN, the researchers present their work combining learning with entertainment (edutainment), to make children and young people as passionate about science as possible. But the participants themselves will feel like real researchers performing unusual experiments under the watchful eye of their mentors. The project has European dimension: due to its broad and diversified awareness campaign, we estimate that 4.5 million people will be made aware of the project and its objectives. Duration of the project: 1.04.-30.11.2021.