[
    {
        "fact": "The sky appears blue because of the way Earth's atmosphere scatters sunlight.",
        "source": "Wikipedia",
        "category": "Science",
        "reference_url": "https://en.wikipedia.org/wiki/Color_of_the_Sky"
    },
    {
        "fact": "Bananas are berries, but strawberries are not.",
        "source": "National Geographic",
        "category": "Food",
        "reference_url": "https://www.nationalgeographic.com/culture/food/the-plate/2016/05/27/are-bananas-berries--a-quiz/"
    },
    {
        "fact": "The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.",
        "source": "Time Magazine",
        "category": "Travel",
        "reference_url": "https://time.com/57909/the-eiffel-tower-is-15-cm-taller-in-summer/"
    },
    {
        "fact": "Octopuses have three hearts and blue blood.",
        "source": "National Geographic",
        "category": "Animals",
        "reference_url": "https://www.nationalgeographic.com/animals/mollusks/group/octopuses-octopi-facts/"
    },
    {
        "fact": "Honey never spoils. Archaeologists have found pots of honey in ancient Egyptian tombs that are over 3000 years old and still perfectly edible.",
        "source": "Smithsonian Magazine",
        "category": "Food",
        "reference_url": "https://www.smithsonianmag.com/science-nature/five-ways-honey-changed-history-180953076/"
    },
    {
        "fact": "Polar bears are actually black and not white.",
        "source": "National Geographic",
        "category": "Animals",
        "reference_url": "https://www.nationalgeographic.com/animals/mammals/p/polar-bear/"
    },
    {
        "fact": "The average person spends 6 months of their lifetime waiting for red lights to turn green.",
        "source": "BBC",
        "category": "Life",
        "reference_url": "https://www.bbc.com/worklife/article/20180525-how-much-of-your-life-have-you-spent-staring-at-your-blinking-phone"
    },
    {
        "fact": "The Great Wall of China is not visible from space without aid. It is a myth.",
        "source": "NASA",
        "category": "Travel",
        "reference_url": "https://www.nasa.gov/content/great-wall-of-china-not-visible-from-space-without-aid"
    },
    {
        "fact": "Your taste buds are replaced every 10 to 14 days.",
        "source": "Science Daily",
        "category": "Science",
        "reference_url": "https://www.sciencedaily.com/releases/2009/03/090330201915.htm"
    },
    {
        "fact": "There are more trees on Earth than there are stars in the Milky Way galaxy.",
        "source": "National Geographic",
        "category": "Nature",
        "reference_url": "https://www.nationalgeographic.com/news/2015/09/150930-forest-facts-canopy-science-world-asthma-day-trees/"
    }
]