{
  "facts": [
    {
      "fact": "The Great Wall of China is often called the longest cemetery on Earth.",
      "source": "National Geographic",
      "category": "History",
      "reference_url": "https://www.nationalgeographic.com/culture/2019/07/great-wall-china-best-facts-history/"
    },
    {
      "fact": "Honey never spoils.",
      "source": "Mental Floss",
      "category": "Food",
      "reference_url": "https://www.mentalfloss.com/article/54880/11-delicious-facts-about-honey"
    },
    {
      "fact": "Giraffes have the same number of vertebrae in their necks as humans.",
      "source": "Smithsonian's National Zoo & Conservation Biology Institute",
      "category": "Animals",
      "reference_url": "https://nationalzoo.si.edu/animals/giraffe"
    },
    {
      "fact": "The average person spends 6 months of their lifetime waiting for a red light to turn green.",
      "source": "ABC News",
      "category": "Statistics",
      "reference_url": "https://abcnews.go.com/Technology/story?id=97685&page=1"
    },
    {
      "fact": "There are more possible iterations of a game of chess than there are atoms in the known universe.",
      "source": "Science Daily",
      "category": "Games",
      "reference_url": "https://www.sciencedaily.com/releases/2012/12/121217172337.htm"
    },
    {
      "fact": "The world's largest snowflake was 15 inches wide and 8 inches thick.",
      "source": "Guinness World Records",
      "category": "Weather",
      "reference_url": "https://www.guinnessworldrecords.com/news/2018/2/diving-into-the-guinness-world-records-science-collection-514931"
    },
    {
      "fact": "The Eiffel Tower can be 15 cm taller during the summer, due to the expansion of the iron on hot days.",
      "source": "Business Insider",
      "category": "Architecture",
      "reference_url": "https://www.businessinsider.com/surprising-facts-about-the-eiffel-tower-2016-6"
    },
    {
      "fact": "The national animal of Scotland is the unicorn.",
      "source": "VisitScotland",
      "category": "Geography",
      "reference_url": "https://www.visitscotland.com/about/uniquely-scottish/national-animal/"
    },
    {
      "fact": "The Moon is gradually moving away from the Earth at a rate of 3.8 cm per year.",
      "source": "NASA",
      "category": "Space",
      "reference_url": "https://moon.nasa.gov/about/overview/"
    },
    {
      "fact": "Bananas are berries, but strawberries are not.",
      "source": "Smithsonian Magazine",
      "category": "Food",
      "reference_url": "https://www.smithsonianmag.com/smart-news/bananas-are-berries-strawberries-arent-2105895/"
    }
  ]
}