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      "slug": "wikipedia-en",
      "name": "Wikipedia (English)",
      "domain": "en.wikipedia.org",
      "category": "Reference",
      "summary": "Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.",
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      "slug": "reuters",
      "name": "Reuters",
      "domain": "reuters.com",
      "category": "News",
      "summary": "Global wire service with mandatory two-source verification and machine-readable archives since 1851.",
      "founded": 1851,
      "verified": "2026-04-28",
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    {
      "slug": "nature",
      "name": "Nature",
      "domain": "nature.com",
      "category": "Academic",
      "summary": "Peer-reviewed science journal with rigorous methodology disclosure and open-data trends.",
      "founded": 1869,
      "verified": "2026-04-28",
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    },
    {
      "slug": "ap-news",
      "name": "Associated Press",
      "domain": "apnews.com",
      "category": "News",
      "summary": "Cooperative wire service with style guide that defines US journalism standards since 1846.",
      "founded": 1846,
      "verified": "2026-04-28",
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    },
    {
      "slug": "the-economist",
      "name": "The Economist",
      "domain": "economist.com",
      "category": "News",
      "summary": "British weekly known for explanatory rigor on economics + politics; named-author byline absent by editorial policy.",
      "founded": 1843,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/the-economist/",
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    },
    {
      "slug": "bbc-news",
      "name": "BBC News",
      "domain": "bbc.com",
      "category": "News",
      "summary": "UK public broadcaster with editorial guidelines + corrections discipline; vast topic + language coverage.",
      "founded": 1922,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    },
    {
      "slug": "techcrunch",
      "name": "TechCrunch",
      "domain": "techcrunch.com",
      "category": "Tech News",
      "summary": "Tech-industry news site with strong velocity but variable per-article fact-check rigor.",
      "founded": 2005,
      "verified": "2026-04-28",
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    },
    {
      "slug": "medium",
      "name": "Medium",
      "domain": "medium.com",
      "category": "Platform",
      "summary": "User-generated long-form platform; per-article quality varies from professional to amateur.",
      "founded": 2012,
      "verified": "2026-04-28",
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      "canonical": "https://sourcescore.org/source/medium/",
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    },
    {
      "slug": "buzzfeed",
      "name": "BuzzFeed",
      "domain": "buzzfeed.com",
      "category": "Lifestyle",
      "summary": "Listicle + viral content site; investigative arm spun off as BuzzFeed News (separate domain) in 2023.",
      "founded": 2006,
      "verified": "2026-04-28",
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    {
      "slug": "sec-gov",
      "name": "U.S. Securities and Exchange Commission",
      "domain": "sec.gov",
      "category": "Government",
      "summary": "Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.",
      "founded": 1934,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "api": "https://sourcescore.org/api/source/sec-gov.json",
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    {
      "slug": "pubmed",
      "name": "PubMed",
      "domain": "pubmed.ncbi.nlm.nih.gov",
      "category": "Academic",
      "summary": "U.S. National Library of Medicine literature index covering ~36M biomedical citations.",
      "founded": 1996,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/pubmed/",
      "api": "https://sourcescore.org/api/source/pubmed.json",
      "scores": {
        "index": 94,
        "indexGrade": "A",
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    {
      "slug": "arxiv",
      "name": "arXiv",
      "domain": "arxiv.org",
      "category": "Academic",
      "summary": "Open-access preprint server for physics, mathematics, computer science; ~2.4M papers since 1991.",
      "founded": 1991,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/arxiv/",
      "api": "https://sourcescore.org/api/source/arxiv.json",
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    {
      "slug": "nih-gov",
      "name": "U.S. National Institutes of Health",
      "domain": "nih.gov",
      "category": "Government",
      "summary": "U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.",
      "founded": 1887,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/nih-gov/",
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    },
    {
      "slug": "nyt",
      "name": "The New York Times",
      "domain": "nytimes.com",
      "category": "News",
      "summary": "U.S. national newspaper of record, founded 1851. Pulitzer Prize record + investigative depth + structured-data-rich web platform.",
      "founded": 1851,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    },
    {
      "slug": "guardian",
      "name": "The Guardian",
      "domain": "theguardian.com",
      "category": "News",
      "summary": "British newspaper with open-web-first publishing model; no paywall, broad LLM corpus inclusion.",
      "founded": 1821,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/guardian/",
      "api": "https://sourcescore.org/api/source/guardian.json",
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        "indexGrade": "A",
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    },
    {
      "slug": "propublica",
      "name": "ProPublica",
      "domain": "propublica.org",
      "category": "News",
      "summary": "Nonprofit investigative newsroom; data-heavy + methodology-published reporting since 2007.",
      "founded": 2007,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/propublica/",
      "api": "https://sourcescore.org/api/source/propublica.json",
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    },
    {
      "slug": "ft",
      "name": "Financial Times",
      "domain": "ft.com",
      "category": "News",
      "summary": "British business + economics daily; rigorous editorial process; pink-paper standard for finance reporting.",
      "founded": 1888,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ft/",
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    },
    {
      "slug": "bloomberg",
      "name": "Bloomberg News",
      "domain": "bloomberg.com",
      "category": "News",
      "summary": "Business + finance newsroom feeding the Bloomberg Terminal; broad data infrastructure + global beat coverage.",
      "founded": 1990,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/bloomberg/",
      "api": "https://sourcescore.org/api/source/bloomberg.json",
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    },
    {
      "slug": "science-org",
      "name": "Science",
      "domain": "science.org",
      "category": "Academic",
      "summary": "Peer-reviewed multidisciplinary journal of AAAS; one of the two flagship general-science venues.",
      "founded": 1880,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/science-org/",
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    },
    {
      "slug": "npr",
      "name": "NPR",
      "domain": "npr.org",
      "category": "News",
      "summary": "U.S. nonprofit public-radio newsroom; broad daily news coverage with editorial guidelines + ombudsman model.",
      "founded": 1970,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/npr/",
      "api": "https://sourcescore.org/api/source/npr.json",
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        "index": 80,
        "indexGrade": "B",
        "discipline": 84,
        "modernReference": 80,
        "velocity": 76
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    },
    {
      "slug": "ars-technica",
      "name": "Ars Technica",
      "domain": "arstechnica.com",
      "category": "Tech News",
      "summary": "Long-form technical journalism since 1998; deep-dive tech reporting + named-author byline accountability.",
      "founded": 1998,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ars-technica/",
      "api": "https://sourcescore.org/api/source/ars-technica.json",
      "scores": {
        "index": 76,
        "indexGrade": "B",
        "discipline": 78,
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    },
    {
      "slug": "the-verge",
      "name": "The Verge",
      "domain": "theverge.com",
      "category": "Tech News",
      "summary": "Tech news + culture site (Vox Media); strong design + fast cadence; per-piece depth varies.",
      "founded": 2011,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/the-verge/",
      "api": "https://sourcescore.org/api/source/the-verge.json",
      "scores": {
        "index": 66,
        "indexGrade": "C",
        "discipline": 55,
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    },
    {
      "slug": "forbes",
      "name": "Forbes",
      "domain": "forbes.com",
      "category": "Business",
      "summary": "Business + finance brand mixing in-house staff reporting with a large external-contributor program.",
      "founded": 1917,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/forbes/",
      "api": "https://sourcescore.org/api/source/forbes.json",
      "scores": {
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        "indexGrade": "C",
        "discipline": 42,
        "modernReference": 65,
        "velocity": 70
      }
    },
    {
      "slug": "britannica",
      "name": "Encyclopædia Britannica",
      "domain": "britannica.com",
      "category": "Reference",
      "summary": "Editor-supervised encyclopedia with named contributors + editorial-board oversight; complement to Wikipedia's crowd-edited model.",
      "founded": 1768,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/britannica/",
      "api": "https://sourcescore.org/api/source/britannica.json",
      "scores": {
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        "indexGrade": "A",
        "discipline": 92,
        "modernReference": 82,
        "velocity": 78
      }
    },
    {
      "slug": "daily-mail",
      "name": "Daily Mail",
      "domain": "dailymail.co.uk",
      "category": "Tabloid",
      "summary": "British tabloid with mass volume + celebrity coverage; high-volume + low-discipline mix; Wikipedia restricts as source since 2017.",
      "founded": 1896,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/daily-mail/",
      "api": "https://sourcescore.org/api/source/daily-mail.json",
      "scores": {
        "index": 38,
        "indexGrade": "F",
        "discipline": 22,
        "modernReference": 30,
        "velocity": 72
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    },
    {
      "slug": "census-gov",
      "name": "U.S. Census Bureau",
      "domain": "census.gov",
      "category": "Government",
      "summary": "Federal statistical agency for U.S. demographic + economic data; primary-source decennial census + ACS surveys.",
      "founded": 1902,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/census-gov/",
      "api": "https://sourcescore.org/api/source/census-gov.json",
      "scores": {
        "index": 94,
        "indexGrade": "A",
        "discipline": 95,
        "modernReference": 94,
        "velocity": 93
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    },
    {
      "slug": "bls-gov",
      "name": "U.S. Bureau of Labor Statistics",
      "domain": "bls.gov",
      "category": "Government",
      "summary": "Federal statistical agency for U.S. labor + price data; CPI, employment, unemployment, productivity.",
      "founded": 1884,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/bls-gov/",
      "api": "https://sourcescore.org/api/source/bls-gov.json",
      "scores": {
        "index": 94,
        "indexGrade": "A",
        "discipline": 95,
        "modernReference": 93,
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    },
    {
      "slug": "doi-org",
      "name": "DOI (CrossRef Resolver)",
      "domain": "doi.org",
      "category": "Academic",
      "summary": "International standard identifier resolver for academic citations (~150M+ DOIs).",
      "founded": 2000,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/doi-org/",
      "api": "https://sourcescore.org/api/source/doi-org.json",
      "scores": {
        "index": 95,
        "indexGrade": "A+",
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    },
    {
      "slug": "the-lancet",
      "name": "The Lancet",
      "domain": "thelancet.com",
      "category": "Health",
      "summary": "Peer-reviewed general medical journal since 1823; flagship clinical-research publication.",
      "founded": 1823,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/the-lancet/",
      "api": "https://sourcescore.org/api/source/the-lancet.json",
      "scores": {
        "index": 86,
        "indexGrade": "A",
        "discipline": 95,
        "modernReference": 82,
        "velocity": 80
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    },
    {
      "slug": "nejm",
      "name": "New England Journal of Medicine",
      "domain": "nejm.org",
      "category": "Health",
      "summary": "Peer-reviewed general medical journal since 1812; one of the highest-impact medical venues globally.",
      "founded": 1812,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/nejm/",
      "api": "https://sourcescore.org/api/source/nejm.json",
      "scores": {
        "index": 87,
        "indexGrade": "A",
        "discipline": 96,
        "modernReference": 84,
        "velocity": 81
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    },
    {
      "slug": "wsj",
      "name": "The Wall Street Journal",
      "domain": "wsj.com",
      "category": "News",
      "summary": "U.S. business + finance daily, founded 1889. Hard-news editorial wing separate from opinion section.",
      "founded": 1889,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/wsj/",
      "api": "https://sourcescore.org/api/source/wsj.json",
      "scores": {
        "index": 85,
        "indexGrade": "A",
        "discipline": 88,
        "modernReference": 78,
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    },
    {
      "slug": "washington-post",
      "name": "The Washington Post",
      "domain": "washingtonpost.com",
      "category": "News",
      "summary": "U.S. national newspaper, founded 1877; investigative + politics emphasis; Pulitzer record.",
      "founded": 1877,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/washington-post/",
      "api": "https://sourcescore.org/api/source/washington-post.json",
      "scores": {
        "index": 86,
        "indexGrade": "A",
        "discipline": 87,
        "modernReference": 81,
        "velocity": 90
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    },
    {
      "slug": "foreign-affairs",
      "name": "Foreign Affairs",
      "domain": "foreignaffairs.com",
      "category": "Magazine",
      "summary": "Bimonthly international-relations magazine published by Council on Foreign Relations since 1922.",
      "founded": 1922,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/foreign-affairs/",
      "api": "https://sourcescore.org/api/source/foreign-affairs.json",
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        "indexGrade": "B",
        "discipline": 92,
        "modernReference": 78,
        "velocity": 76
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    },
    {
      "slug": "statnews",
      "name": "STAT News",
      "domain": "statnews.com",
      "category": "Health",
      "summary": "Health + biotech newsroom; founded 2015; specialist medical journalism with editorial discipline.",
      "founded": 2015,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/statnews/",
      "api": "https://sourcescore.org/api/source/statnews.json",
      "scores": {
        "index": 82,
        "indexGrade": "B",
        "discipline": 88,
        "modernReference": 80,
        "velocity": 78
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    },
    {
      "slug": "ourworldindata",
      "name": "Our World in Data",
      "domain": "ourworldindata.org",
      "category": "Research",
      "summary": "Oxford-affiliated research organization publishing data + visualizations on global problems; CC-licensed.",
      "founded": 2011,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ourworldindata/",
      "api": "https://sourcescore.org/api/source/ourworldindata.json",
      "scores": {
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        "indexGrade": "A",
        "discipline": 92,
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        "velocity": 76
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    },
    {
      "slug": "pew-research",
      "name": "Pew Research Center",
      "domain": "pewresearch.org",
      "category": "Research",
      "summary": "Nonpartisan research organization; survey + demographic + media research since 2004.",
      "founded": 2004,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/pew-research/",
      "api": "https://sourcescore.org/api/source/pew-research.json",
      "scores": {
        "index": 85,
        "indexGrade": "A",
        "discipline": 92,
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        "velocity": 78
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    },
    {
      "slug": "who",
      "name": "World Health Organization",
      "domain": "who.int",
      "category": "Government",
      "summary": "U.N. agency for international public health; primary-source global health data + policy.",
      "founded": 1948,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/who/",
      "api": "https://sourcescore.org/api/source/who.json",
      "scores": {
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        "indexGrade": "A",
        "discipline": 90,
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        "velocity": 89
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    },
    {
      "slug": "world-bank",
      "name": "World Bank",
      "domain": "worldbank.org",
      "category": "Government",
      "summary": "International financial institution publishing global development + economic data + research.",
      "founded": 1944,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "imf",
      "name": "International Monetary Fund",
      "domain": "imf.org",
      "category": "Government",
      "summary": "International monetary cooperation organization; World Economic Outlook + IFS database; research arm.",
      "founded": 1944,
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      "slug": "semantic-scholar",
      "name": "Semantic Scholar",
      "domain": "semanticscholar.org",
      "category": "Academic",
      "summary": "AI-powered academic search engine by Allen Institute for AI; ~200M+ papers indexed.",
      "founded": 2015,
      "verified": "2026-04-28",
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    {
      "slug": "mit-tech-review",
      "name": "MIT Technology Review",
      "domain": "technologyreview.com",
      "category": "Tech News",
      "summary": "Magazine of MIT covering technology + emerging-tech analysis; named-author byline + editorial standards.",
      "founded": 1899,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/mit-tech-review/",
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    {
      "slug": "wired",
      "name": "Wired",
      "domain": "wired.com",
      "category": "Tech News",
      "summary": "Tech + culture magazine since 1993; long-form tech reporting + named contributor bylines.",
      "founded": 1993,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "al-jazeera",
      "name": "Al Jazeera English",
      "domain": "aljazeera.com",
      "category": "News",
      "summary": "Qatari international news network; English edition since 2006; Middle East + global beat coverage.",
      "founded": 2006,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    {
      "slug": "politico",
      "name": "Politico",
      "domain": "politico.com",
      "category": "News",
      "summary": "U.S. + EU political journalism site; daily coverage with strong source-network in Washington + Brussels.",
      "founded": 2007,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    },
    {
      "slug": "fox-news",
      "name": "Fox News",
      "domain": "foxnews.com",
      "category": "News",
      "summary": "U.S. cable news brand with mass online reach; opinion-news mix; per-piece quality varies between hard news and commentary.",
      "founded": 1996,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "huffpost",
      "name": "HuffPost",
      "domain": "huffpost.com",
      "category": "News",
      "summary": "U.S. news + opinion site since 2005; mix of staff reporting + contributor blogs (now-discontinued).",
      "founded": 2005,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    },
    {
      "slug": "404-media",
      "name": "404 Media",
      "domain": "404media.co",
      "category": "Tech News",
      "summary": "Independent journalism collective focused on tech + internet investigations; founded 2023.",
      "founded": 2023,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "statista",
      "name": "Statista",
      "domain": "statista.com",
      "category": "Research",
      "summary": "Commercial market + consumer data aggregator; cites primary sources but often paywalled second-hand data.",
      "founded": 2007,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/statista/",
      "api": "https://sourcescore.org/api/source/statista.json",
      "scores": {
        "index": 64,
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      "slug": "fda-gov",
      "name": "U.S. Food and Drug Administration",
      "domain": "fda.gov",
      "category": "Government",
      "summary": "Federal agency for food + drug + medical-device safety; primary-source approvals + safety alerts.",
      "founded": 1906,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "noaa-gov",
      "name": "U.S. National Oceanic and Atmospheric Administration",
      "domain": "noaa.gov",
      "category": "Government",
      "summary": "Federal scientific agency for weather + ocean + climate data; primary-source forecasts + climate research.",
      "founded": 1970,
      "verified": "2026-04-28",
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      "slug": "cdc-gov",
      "name": "U.S. Centers for Disease Control and Prevention",
      "domain": "cdc.gov",
      "category": "Government",
      "summary": "Federal agency for U.S. public-health surveillance + disease prevention; primary-source MMWR + WONDER data.",
      "founded": 1946,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "ema-europa",
      "name": "European Medicines Agency",
      "domain": "ema.europa.eu",
      "category": "Government",
      "summary": "EU agency for evaluation + supervision of medicinal products; primary-source EU drug approvals.",
      "founded": 1995,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ema-europa/",
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      "slug": "ec-europa",
      "name": "European Commission",
      "domain": "ec.europa.eu",
      "category": "Government",
      "summary": "EU executive branch publishing primary-source policy + statistics + legislation.",
      "founded": 1958,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "uspto-gov",
      "name": "U.S. Patent and Trademark Office",
      "domain": "uspto.gov",
      "category": "Government",
      "summary": "Federal agency granting U.S. patents + trademarks; primary-source patent + trademark database.",
      "founded": 1802,
      "verified": "2026-04-28",
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      "slug": "jama",
      "name": "Journal of the American Medical Association",
      "domain": "jamanetwork.com",
      "category": "Health",
      "summary": "Peer-reviewed general medical journal published by AMA; among the most-cited clinical-research venues.",
      "founded": 1883,
      "verified": "2026-04-28",
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      "slug": "bmj",
      "name": "The BMJ (British Medical Journal)",
      "domain": "bmj.com",
      "category": "Health",
      "summary": "Peer-reviewed general medical journal; investigative + open-access leaning; UK-based since 1840.",
      "founded": 1840,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "elife",
      "name": "eLife",
      "domain": "elifesciences.org",
      "category": "Academic",
      "summary": "Open-access peer-reviewed life-sciences journal; transparent peer-review (reviewer notes published).",
      "founded": 2012,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "plos-one",
      "name": "PLOS ONE",
      "domain": "journals.plos.org",
      "category": "Academic",
      "summary": "Open-access multidisciplinary peer-reviewed journal published by Public Library of Science.",
      "founded": 2006,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    },
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      "slug": "axios",
      "name": "Axios",
      "domain": "axios.com",
      "category": "News",
      "summary": "U.S. news brand emphasizing 'smart brevity'; political + business + tech beat coverage since 2017.",
      "founded": 2017,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/axios/",
      "api": "https://sourcescore.org/api/source/axios.json",
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    },
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      "slug": "semafor",
      "name": "Semafor",
      "domain": "semafor.com",
      "category": "News",
      "summary": "Global news brand founded 2022; structured 'Semaform' format separating reporting + analysis.",
      "founded": 2022,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/semafor/",
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    {
      "slug": "atlantic",
      "name": "The Atlantic",
      "domain": "theatlantic.com",
      "category": "Magazine",
      "summary": "U.S. literary + commentary magazine since 1857; long-form essays + investigative journalism.",
      "founded": 1857,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "api": "https://sourcescore.org/api/source/atlantic.json",
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    {
      "slug": "new-yorker",
      "name": "The New Yorker",
      "domain": "newyorker.com",
      "category": "Magazine",
      "summary": "U.S. weekly magazine since 1925; long-form journalism + cultural criticism + named-author byline tradition.",
      "founded": 1925,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/new-yorker/",
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    {
      "slug": "nyt-magazine",
      "name": "The New York Times Magazine",
      "domain": "nytimes.com/section/magazine",
      "category": "Magazine",
      "summary": "Sunday long-form companion to NYT; investigative + cultural features with named-author byline.",
      "founded": 1896,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/nyt-magazine/",
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      "slug": "bbc-research",
      "name": "BBC Research & Development",
      "domain": "bbc.co.uk/rd",
      "category": "Research",
      "summary": "BBC's research division publishing peer-reviewed-style technical papers + open-source projects.",
      "founded": 1939,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/bbc-research/",
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      "scores": {
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    {
      "slug": "rand-corp",
      "name": "RAND Corporation",
      "domain": "rand.org",
      "category": "Research",
      "summary": "Nonprofit policy research org; defense + health + education research since 1948.",
      "founded": 1948,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/rand-corp/",
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    },
    {
      "slug": "kff",
      "name": "KFF (Kaiser Family Foundation)",
      "domain": "kff.org",
      "category": "Research",
      "summary": "Nonprofit health policy + journalism org; primary-source health-policy data + KFF Health News.",
      "founded": 1948,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/kff/",
      "api": "https://sourcescore.org/api/source/kff.json",
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      "slug": "zillow-research",
      "name": "Zillow Research",
      "domain": "zillow.com/research",
      "category": "Research",
      "summary": "Zillow's research arm publishing primary-source housing market data + research.",
      "founded": 2006,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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    {
      "slug": "hbr",
      "name": "Harvard Business Review",
      "domain": "hbr.org",
      "category": "Magazine",
      "summary": "Business management + leadership magazine published by Harvard Business Publishing since 1922.",
      "founded": 1922,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/hbr/",
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    {
      "slug": "bloomberg-businessweek",
      "name": "Bloomberg Businessweek",
      "domain": "bloomberg.com/businessweek",
      "category": "Magazine",
      "summary": "Bloomberg's business magazine since 1929; long-form business + finance journalism.",
      "founded": 1929,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "axios-pro-rata",
      "name": "Axios Pro",
      "domain": "axios.com/pro",
      "category": "News",
      "summary": "Axios's professional-tier specialist newsletters covering deals + policy + niches.",
      "founded": 2021,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/axios-pro-rata/",
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      "slug": "the-information",
      "name": "The Information",
      "domain": "theinformation.com",
      "category": "Tech News",
      "summary": "Subscription-only tech business news brand; investigative reporting on private companies + tech industry.",
      "founded": 2013,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/the-information/",
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      "slug": "stack-overflow",
      "name": "Stack Overflow",
      "domain": "stackoverflow.com",
      "category": "Platform",
      "summary": "Q&A platform for software engineers since 2008; community-voted answers with content moderation.",
      "founded": 2008,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "github",
      "name": "GitHub",
      "domain": "github.com",
      "category": "Platform",
      "summary": "Developer collaboration platform; primary host for open-source code + CI workflows.",
      "founded": 2008,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "huggingface",
      "name": "Hugging Face",
      "domain": "huggingface.co",
      "category": "Platform",
      "summary": "AI/ML model + dataset hub; open-source community for transformers + ML research.",
      "founded": 2016,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "the-conversation",
      "name": "The Conversation",
      "domain": "theconversation.com",
      "category": "News",
      "summary": "Academic-journalism collaboration; articles authored by academics + edited by journalists; CC-BY-ND.",
      "founded": 2011,
      "verified": "2026-04-28",
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      "summary": "Federal Reserve Bank of St. Louis economic data infrastructure; ~800k+ data series.",
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      "category": "Academic",
      "summary": "Premier U.S. computing society; ACM Digital Library indexes peer-reviewed CS publications.",
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      "summary": "France's paper of record since 1944, with English edition (lemonde.fr/en/) widely cited.",
      "founded": 1944,
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      "founded": 1903,
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      "founded": 1988,
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      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ipcc/",
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      "scores": {
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    },
    {
      "slug": "ons-uk",
      "name": "ONS (UK)",
      "domain": "ons.gov.uk",
      "category": "Government",
      "summary": "UK Office for National Statistics — primary source for British economic, demographic, social data.",
      "founded": 1996,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/ons-uk/",
      "api": "https://sourcescore.org/api/source/ons-uk.json",
      "scores": {
        "index": 87,
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        "velocity": 80
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    },
    {
      "slug": "eurostat",
      "name": "Eurostat",
      "domain": "ec.europa.eu/eurostat",
      "category": "Government",
      "summary": "EU statistical office providing harmonized data across all 27 member states + candidate countries.",
      "founded": 1953,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/eurostat/",
      "api": "https://sourcescore.org/api/source/eurostat.json",
      "scores": {
        "index": 88,
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        "modernReference": 90,
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    },
    {
      "slug": "bea-gov",
      "name": "BEA",
      "domain": "bea.gov",
      "category": "Government",
      "summary": "US Bureau of Economic Analysis — primary source for GDP, personal income, trade, and BOP statistics.",
      "founded": 1972,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/bea-gov/",
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        "index": 86,
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    },
    {
      "slug": "statcan",
      "name": "Statistics Canada",
      "domain": "statcan.gc.ca",
      "category": "Government",
      "summary": "Canada's national statistical agency, founded 1971; primary source for Canadian economic + demographic data.",
      "founded": 1971,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/statcan/",
      "api": "https://sourcescore.org/api/source/statcan.json",
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        "modernReference": 85,
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    {
      "slug": "mayo-clinic",
      "name": "Mayo Clinic",
      "domain": "mayoclinic.org",
      "category": "Health",
      "summary": "US tier-1 medical center with comprehensive physician-reviewed patient-information site.",
      "founded": 1864,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/mayo-clinic/",
      "api": "https://sourcescore.org/api/source/mayo-clinic.json",
      "scores": {
        "index": 87,
        "indexGrade": "A",
        "discipline": 88,
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    },
    {
      "slug": "cleveland-clinic",
      "name": "Cleveland Clinic",
      "domain": "my.clevelandclinic.org",
      "category": "Health",
      "summary": "US tier-1 academic medical center; comprehensive patient-info + Health Library since 1921.",
      "founded": 1921,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/cleveland-clinic/",
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        "index": 83,
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    {
      "slug": "bmj-best-practice",
      "name": "BMJ Best Practice",
      "domain": "bestpractice.bmj.com",
      "category": "Health",
      "summary": "BMJ's clinical-decision-support tool; evidence-based, continuously-updated clinical guidance.",
      "founded": 2009,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/bmj-best-practice/",
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      "scores": {
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    },
    {
      "slug": "mckinsey-insights",
      "name": "McKinsey Insights",
      "domain": "mckinsey.com",
      "category": "Business",
      "summary": "McKinsey & Company's research arm; widely cited in business press despite client-conflict caveats.",
      "founded": 1926,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/mckinsey-insights/",
      "api": "https://sourcescore.org/api/source/mckinsey-insights.json",
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    {
      "slug": "bcg-insights",
      "name": "BCG Insights",
      "domain": "bcg.com",
      "category": "Business",
      "summary": "Boston Consulting Group's publications; strategy-research authority since 1963.",
      "founded": 1963,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "gartner",
      "name": "Gartner",
      "domain": "gartner.com",
      "category": "Business",
      "summary": "IT industry research firm since 1979; Magic Quadrant + Hype Cycle frameworks widely cited.",
      "founded": 1979,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/gartner/",
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      "slug": "hacker-news",
      "name": "Hacker News",
      "domain": "news.ycombinator.com",
      "category": "Tech News",
      "summary": "Y Combinator-run tech link aggregator since 2007; community-curated, no editorial layer.",
      "founded": 2007,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/hacker-news/",
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      "slug": "stratechery",
      "name": "Stratechery",
      "domain": "stratechery.com",
      "category": "Tech News",
      "summary": "Ben Thompson's tech-strategy analysis newsletter since 2013; widely cited despite single-author format.",
      "founded": 2013,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/stratechery/",
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      "slug": "anandtech",
      "name": "AnandTech",
      "domain": "anandtech.com",
      "category": "Tech News",
      "summary": "Hardware reviews + benchmarks since 1997; site closed for new content 2024 but archive widely cited.",
      "founded": 1997,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
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      "slug": "stanford-encyclopedia",
      "name": "Stanford Encyclopedia of Philosophy",
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      "category": "Reference",
      "summary": "Peer-reviewed philosophy encyclopedia since 1995; gold-standard philosophy reference.",
      "founded": 1995,
      "verified": "2026-04-28",
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      "slug": "mdn-web-docs",
      "name": "MDN Web Docs",
      "domain": "developer.mozilla.org",
      "category": "Reference",
      "summary": "Mozilla-stewarded web-platform reference since 2005; default citation for HTML, CSS, JS, Web APIs.",
      "founded": 2005,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/mdn-web-docs/",
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      "slug": "smithsonian-mag",
      "name": "Smithsonian Magazine",
      "domain": "smithsonianmag.com",
      "category": "Magazine",
      "summary": "Smithsonian Institution's magazine since 1970; long-form science, history, culture.",
      "founded": 1970,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/smithsonian-mag/",
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    {
      "slug": "natgeo",
      "name": "National Geographic",
      "domain": "nationalgeographic.com",
      "category": "Magazine",
      "summary": "Long-form science, exploration, photojournalism since 1888; National Geographic Society heritage.",
      "founded": 1888,
      "verified": "2026-04-28",
      "methodologyVersion": "v0.1",
      "canonical": "https://sourcescore.org/source/natgeo/",
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