Ljubljana is faced with significant overgrowth of Japanese knotweed, a plant on the list of 100 most invasive non-native species worldwide. Ljubljana teamed up with the Re-generacija collective of young designers and architects focusing on issues connected to social and environmental well-being, as well as some other stakeholders, to prevent excessive overgrowth of the plant and reuse it.

Munich has taken its ambitious waste reduction strategy to the next level by developing an innovative reuse lab and shop concept. Its Halle 2 municipal secondhand store not only enables people to take responsibility for living more sustainably, it also provides opportunities for job creation, educational programmes and voluntary activities.