Join multidisciplinary and international teams at the ECIU University and solve nano challenges provided by business and societal partners across Europe. Participation in nano challenges will allow you to make a real impact in the community, city, or region by solving real-time local, national, and global challenges with a new way of learning - the challenge-based learning. General procedure of a challenge: The nano challenge is provided by a city, region or business stakeholder and is entered on the ECIU University Challenge platform (https://engage.eciu.eu/). You register to the nano challenge you find relevant on the platform. An international and interdisciplinary team is formed from registered participants from all ECIU partner universities and a team facilitator from the host university is assigned. You work with the team on the nano challenge, engage, investigate, and propose non-technical solutions using the challenge-based learning methodology (https://www.tuhh.de/eciu/challenge-based-learning). During the process, you can select relevant micro-modules from ECIU member universities that help you gain additional knowledge or skills that are relevant to solve the nano challenge. Finally, teams deliver their outputs - which may include services, products, research questions, start-ups and spin-offs. By working in multi-disciplinary and/or international teams, you will build up inter-cultural competences and increase your network of expertise by developing problem-solving and team-work skills. TUHH is major part of the ECIU University leading institution related to the Challenge-based learning. All ECIU challenges will constantly be updated at the challenge platform: https://engage.eciu.eu/ Nano challenges are challenges in the ECIU University that are supposed to be done within several days. Focus is to define your actual challenge, find suitable solution(s) and to implement them. This course is aimed at Master students from member universities of the ECIU network (https://www.eciu.eu/). The course requires an independent approach to work, the willingness to learn independently about new non-technical topics and research methods, and the motivation to learn and actively participate in an international/disciplinary team.