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Place and time: New York City and London, 1850s.
Subject: Landscape architecture (arranging landscape for human use) and social welfare.
Galileo's Math Mystery. In 1610, the Italian astronomer Galileo Galilei looked through his telescope at the sun and saw objects which all the world's scientists agreed could not exist.
Place and time: Italy, 17th century.
Subjects: Astronomy, optics, geometry, and art.
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This text, or a variation on it, was originally published at duskpeterson.com. Copyright © 2006 Heather Elizabeth Peterson. Some rights reserved. The text is licensed under a Creative Commons Attribution Noncommercial License (creativecommons.org/licenses/by-nc/3.0). You may freely print, post, e-mail, share, or otherwise distribute the text for noncommercial purposes, provided that you include this paragraph. The author's policies on derivative works and fan works are available online (duskpeterson.com/copyright.htm).