During the Green Business Challenge (14th of November-19th of November) Right after the Global Entrepreneurship Week in November 2021, 30 young professionals (students and starters) from all over Europe will work on important cases. The cases are based on one of the following themes: circular economy, biobased and circular product design, biocomposites, green chemistry, and climate change. The main theme: business models for a green economy. The challenges allow for interesting international connections between young professionals, businesses, and the Ems Dollard Region. The main goal is to create an impact event, boost the green economy, and facilitate new collaborations and a special experience for both participants and stakeholders.