Late last year, world leaders, scientists, and advocates started working on a global, legally binding treaty under the United Nations to end plastic waste. The second round of negotiations concluded last week in Paris with a plan to produce an initial draft of the deal. This treaty could be huge. Although it will take months of negotiating for any of the details to become clear, the agreement — set to be finalized by the end of 2024 — will require countries to do far more than just fix their recycling systems.

Recycled and reused food contact plastics are “vectors for spreading chemicals of concern” because they accumulate and release hundreds of dangerous toxins like styrene, benzene, bisphenol, heavy metals, formaldehyde and phthalates, new research finds.