{
  "id": 15162420,
  "title": "Microplastics React With Water, a New Study Says. That’s a Problem for Biology",
  "url": "https://urgent.news/2026/10/17/microplastics-react-with-water-a-new-study-says-thats-a-problem-for",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-17T09:00:00.000Z",
  "source": {
    "name": "Wired",
    "slug": "wired",
    "url": "https://www.wired.com/story/microplastics-react-with-water-new-study-says-thats-a-problem-for-biology/"
  },
  "original_language": "en",
  "account": "Microplastics, those tiny plastic fragments that have infiltrated virtually every ecosystem on Earth, are now found to be chemically reactive when submerged in water, according to a new study published in Nature. This unexpected behavior, which occurs even under normal environmental conditions, could pose a significant threat to biological systems. The research, led by scientists at Columbia University and UC Berkeley, reveals that water can make microplastics' surfaces chemically active, transforming them into potential hazards. This activation generates high-energy, reactive radicals known as hydroxyl radicals, which can snatch electrons from proteins and fats that make up cell membranes, disrupting their structure and function. These reactive radicals are particularly dangerous because they can damage animal and human tissue, leading to oxidative stress and cellular damage. The researchers suggest that the increased surface area of microplastics, as they fragment into smaller and smaller particles, contributes to their enhanced reactivity. This phenomenon occurs spontaneously, without the need for sunlight or other agents that typically cause plastic degradation. The potential impact of this discovery is significant, as microplastics have been detected in various biological systems, including blood. When red blood cells from mice were exposed to different types of microplastics, they became deformed and ruptured—a condition known as hemolysis. The researchers found that the extent of cellular damage was greater with microplastics that exhibited higher water reactivity, indicating that water-induced reactivity is the primary cause of cellular damage. This finding challenges previous assumptions that microplastics are chemically inert, particularly for the microscopic pieces that result from larger plastic fragments. The study highlights the need for further research into the effects of microplastics on biological systems, as the current understanding of these pollutants is largely based on their leaching of other chemicals and physical effects.",
  "summary": "Though plastic is usually inert, tiny pieces of it have the potential to react with one of the most pervasive molecules in the environment and in our bodies.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Wired Science",
        "title": "Microplastics React With Water, a New Study Says. That’s a Problem for Biology",
        "url": "https://urgent.news/2026/10/17/microplastics-react-with-water-a-new-study-says-thats-a-problem-for-15164197",
        "published": "2026-10-17T09:00:00.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}