http://hypography.com/ ©2007 Spoonlabs d.o.o. Vivvo CMS 4.0 2008-12-02T05:50:55-08:00 http://hypography.com/news/physical-sciences/35497.html 2008-04-13T18:22:00-07:00 2008-04-13T18:22:00-07:00 C1ay The origin of the Grand Canyon has been a topic of scientific controversy for nearly 140 years. Now, with geochronologic data from the canyon and surrounding plateaus, geologists from the California Institute of Technology present significant evidence that lends new insight into its history of formation.