Plastic pollution in the world's oceans has reached alarming levels, threatening marine ecosystems and human food chains alike. What are the causes of this problem? What measures could be taken to solve it?

• ・Should single-use plastics be banned globally, or is this unrealistic?
• ・Who bears greater responsibility for ocean plastic — consumers, corporations, or governments?
• ・How effective are international agreements in tackling transboundary environmental problems?