The Shadow of a Stick - History's Arrow

What this episode covers

How do you measure the world with nothing but a stick and a question? Harmonia remembers Eratosthenes of Cyrene-the ancient librarian who watched shadows, measured sunlight, and dared to calculate the circumference of the earth. In a city of scrolls and doubters, Eratosthenes' quiet curiosity changed how humanity saw itself. Through sunlit moments, doubts, and stubborn hope, this episode weaves a story of memory, courage, and the endless quest to understand our place in the universe. For the young and the curious-and anyone who's ever wondered what lies just beyond the horizon. Transcript available at: https://harmonia.email/podcast-episode/shadow-stick Share and read comments: https://harmonia.email/podcast-comments?field_podcast_feed_value=harmonia_s_history&from_node=55

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Frequently Asked Questions

How long is this episode of History's Arrow?

This episode is 14 minutes long.

When was this History's Arrow episode published?

This episode was published on November 6, 2025.

What is this episode about?

How do you measure the world with nothing but a stick and a question? Harmonia remembers Eratosthenes of Cyrene-the ancient librarian who watched shadows, measured sunlight, and dared to calculate the circumference of the earth. In a city of scrolls...

Is there a transcript available for this episode?

Yes, a full transcript is available for this episode. You can read the complete transcript on the episode page.

Can I download this History's Arrow episode?

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