As governments prepare for the resumed session of the Intergovernmental Negotiating Committee on Plastic Pollution (INC-5.2), the urgency of agreeing on a legally binding global plastics treaty is more pressing than ever. This editorial introduces a collection of letters calling for systemic, science-based, and justice-oriented approaches to plastic governance delivered through an ambitious and effective global plastics treaty. The letters span environmental, health, and social disciplines, and highlight the shortcomings of fragmented policy and assert the need for coordinated and binding action. The letters advocate for reducing plastic production, implementing restrictions on toxic chemicals, incorporating the structural inclusion of affected communities, and ensuring robust scientific oversight. Taken together, the collection of letters reflects the scientific and ethical imperatives to act decisively in shaping a transformative and enforceable plastics treaty.
