Research about the circular economy is dominated by engineers, architects, and social scientists in fields other than economics. The concepts they study can be useful in economic models of policies – to reduce virgin materials extraction, to encourage green design, and to make better use of...

The UN's Sustainable Development Goals in their generalized form need to be further reflected in order to identify synergies and trade-offs between their (sub-)targets, and to apply them to concrete nations and regions. Explorative, qualitative cause and effect modeling could serve as a tool for...

Marine litter seriously affects island-based or archipelagic economies. The Philippines is an example of a country at the center of this predicament due to its strategic geographic location as a regional trade route. Urbanization, rapid economic development, and the population increase are some...