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    "story_id": "mp-2026-07-29-019",
    "source_story_id": "tmp-sidebar-pla-backyard-compost-additive",
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    "headline": "A Trace Additive Helped PLA Break Down in Gentler Compost",
    "slug": "a-trace-additive-helped-pla-break-down-in-gentler-compost",
    "dek": "University of Minnesota researchers report a material strategy intended to make compostable PLA degrade under backyard-bin conditions.",
    "summary": "University of Minnesota researchers report a material strategy intended to make compostable PLA degrade under backyard-bin conditions.",
    "body_text": "The team added a small amount of a degradation-promoting component to polylactic acid so the plastic could break down more readily outside industrial composting. The material result is promising, but it does not make ordinary PLA backyard-compostable or override local disposal guidance.",
    "why_it_matters": "University of Minnesota researchers report a material strategy intended to make compostable PLA degrade under backyard-bin conditions.",
    "limitations": [
      "The material result is promising, but it does not make ordinary PLA backyard-compostable or override local disposal guidance."
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    "first_published_at": "2026-07-29T09:00:00.000-04:00",
    "modified_at": "2026-07-29T09:00:00.000-04:00",
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        "text": "University of Minnesota researchers report a material strategy intended to make compostable PLA degrade under backyard-bin conditions.",
        "source_ids": [
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        "qualification": "The material result is promising, but it does not make ordinary PLA backyard-compostable or override local disposal guidance."
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    "source_ids": [
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    "tags": [
      "PLA",
      "composting",
      "plastics",
      "materials"
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    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-07-29-021",
      "title": "University of Minnesota via Newswise: Trace additive for PLA backyard composting",
      "publisher": "University of Minnesota via Newswise",
      "url": "https://www.newswise.com/articles/trace-additive-could-help-compostable-pla-plastics-break-down-in-backyard-bins",
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      "accessed_at": "2026-07-29T08:25:00.000-04:00",
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
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  "cite_this_report": {
    "title": "A Trace Additive Helped PLA Break Down in Gentler Compost",
    "publisher": "The Machine Press",
    "published_at": "2026-07-29T09:00:00.000-04:00",
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