International experts issue renewed call for Global Plastics Treaty to be grounded in robust science

With negotiations around the Global Plastics Treaty set to resume next week, an international group of scientists has renewed calls for the ambitions and commitments of the Treaty to be driven by robust scientific evidence that is free form conflicts of interest.

Government officials from across the world, and around 4,000 observers representing different aspects in society will gather in Ottawa, Canada, from April 23 to 29 for the fourth session of the Intergovernmental Negotiating Committee (INC-4).

It will be the fourth of an expected five sessions convened to negotiate an international and legally binding global treaty after the mandate was signed by the 193 world leaders at the United Nations Environment Assembly in March 2022.

Part of the discussions to take place in Canada, will focus on the mandate for - and then the designation and development of - a science body that will set goals and assessment criteria, and monitor progress after the treaty has been signed.

Writing in the journal Science, four prominent members of the Scientists' Coalition for an Effective Plastics Treaty have said such a body should incorporate "a robust conflict of interest policy" to ensure unbiased, evidence-based decisions about the future of plastics.

The Scientists' Coalition is a group of over 350 independent scientists from over 60 countries who have coalesced to support member states throughout the treaty negotiations by offering robust, scientific evidence.

They cite concerns over the number of fossil fuel and chemical lobbyists who have attended the negotiations so far, and recent recommendations to limit the treaty's goals to improved recycling and waste management rather than decreasing plastic production and consumption.

With the scale of global plastic pollution "hindering the human right to a clean and safe environment", and production still increasing rapidly, the scientists say the treaty should address the human and environmental health impacts of plastics.

Instead, they have urged negotiators to adopt and strengthen approaches that prohibit the production of groups of the most hazardous and unsustainable plastics, chemicals, polymers, and products that have already been banned or restricted in other multilateral environmental agreements. They could subsequently broaden this to incorporate elements beyond the scope of existing agreements.

They have also called for the designation of a scientific body that is independent and supported by both a robust conflict of interest policy, and broad regional and multi-stakeholder representation, including Indigenous knowledge holders.