Is the surface of Mars criss-crossed by lines so long and straight they can only be constructions of an advanced alien civilization? Many astronomers in the late 19th and early 20th century thought so. Join us in this jaunt into the frailty of human perception.
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Music and graphic design by Rachel Westhoff. Maps, pics, references and more at www.deadideas.net.
The Canals of Mars – American History, Science History | Dead Ideas: The History of Extinct Thoughts and Practices podcast - Listen or read transcript on Metacast
