There is a reason that most couples today do not have a significant age difference. Consider that over the last one hundred years, the average age difference between married couples is 3.5 years.
The Colorado River flows from the Continental Divide in Colorado's Rocky Mountain National Park into the Gulf of California between the Baja California peninsula and mainland Mexico. Here, Snowmass Mountain looms above the Roaring Fork River, a tributary of the Colorado. Peter McBride.
The Colorado River in the Grand Canyon. (Photo: gooseneck state park image by antocar from Fotolia.com ) The Grand Canyon is a 277-mile-long gash in the high desert of Arizona that digs as deep as a mile into the earth's surface and offers some of the most beloved and intriguing geology in the entire United States.