In each culture the origins of civilization can be tied to the arising of one concept in the human mind: straight lines. Straight and perpendicular lines are not found in nature, so where did they come from What shift in consciousness occurred around the globe that triggered the start of rectangular building methods and linear organization as well as written language, pyramid construction, mathematics, and art Outlining the historical, psychological, geophysical, and neurological roots of the modern human mind, Carl Johan Calleman Phd shows how studying early civilizations offers a means of understanding the evolution of consciousness. Find out how the global midn, rather than the individual, drives the evolution of both consciousness and civilization.Carl Johan Calleman holds a Ph.D. in physical biology from the University of Stockholm. A leading expert on the Mayan Calendar, he is the author of The Mayan Calendar and the Transformation of Consciousness and The Purposeful Universe. He lives in Santa Fe, New Mexico. http://calleman.com