The Britannica Guide to Theories and Ideas That Changed the Modern World

There was a time when people assumed that the world was flat. Once an alternate theory was proposed, the original notion was challenged and, eventually, disproved. In short, theories and ideas can be potent agents of change. None more so than those that are extensively detailed in this book. Fascinating photographs and illustrations accompany the narrative.

• Format: Library Binding
• Language: English
• ISBN: 1615300295
• ISBN13: 9781615300297
• Release Date: February 2010
• Publisher: Rosen Education Service
• Length: 384 Pages
• Weight: 1.65 lbs.
• Dimensions: 1.2" x 6.2" x 9.0"
• Age Range: 14 to 17 years
• Grade Range: Grades 9 to 12