# Expedition to the Equator: A Scientific Adventure Story

Ricardo V. Luna holds a conversation with Larrie D. Ferreiro, whose latest book describes an 18th-century scientific expedition to the equator to determine the true shape of the Earth. Ferreiro's new book tells the story of a 10-year scientific expedition to the equator to resolve the mystery surrounding the shape of the Earth. It was known that the Earth was not a perfect sphere, but scientists did not know if it was elongated or flattened at the poles. As a Washington Post book review asked, did the planet look like an egg standing upright in its carton or like an exercise ball when someone sat on it?

- Kind: Talk
- Year: 2011
- By: John W. Kluge Center (library Of Congress)
- Genres: Science, History, Adventure
- Archive: [Library of Congress](https://www.loc.gov/item/2021688757/)
- Licence or status: Rights statement at the Library of Congress (as the archive states it)
- Credit: Library of Congress
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/loc/2021688757?play=1)