This story appears in the September 2016 issue of National Geographic magazine ... We’re on a cliff roughly 3,500 feet above the Colorado River at the tip of the Great Thumb Mesa, a spectacular ...

This story appears in the February 2010 issue of National Geographic magazine. The first church members arrive at the Leroy S. Johnson Meeting House in Colorado City, Arizona, at about 6 p.m ...

Richard Johnson, a nephrologist at the University of Colorado Denver ... could meet the criteria for metabolic syndrome set by the National Institutes of Health. Recently the American Heart ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely ... About that time University of Colorado microbiologist Norman Pace led a team ...

This story appears in the October 2016 issue of National Geographic magazine. At Lees Ferry ... rapids shaped by the gravitational tug of the Colorado River at its most muscular.