NATIONAL GEOGRAPHIC MAGAZINE

The Rising Great Salt Lake: No Way to Run a Desert June 1985, p.694-719

The Colorado: A River Drained Dry  p. 2-35, July 1988,

Atlanta on the Rise June 1991, p.3-29

Ogallala Aquifer: Wellspring of the High Plains March 1993, p. 80-109

Our Disappearing Wetlands  October 1992,  p. 3-45; also on the issue’s “On Assignment” page 

Troubled Waters Run Deep on US pollution in Water: A National Geographic Special Edition  November 1993,  p. 78-89; also  “On Assignment”

The Mississippi:  River Under Siege in Water:  A National Geographic Special Edition November 1993,  p. 90-105

Great Flood of ‘93 January 1994,  p. 42-81 

A Farming Revolution: Sustainable Agriculture December 1995,  p. 60-89; also ”On Assignment” 

Scotland: Plaid to the Bone September 1996,  p. 2-27

Colorado’s Front Range November 1996,  p. 80-103

Cascadia May 1998,  p. 6-37; also on the issue’s “On Assignment” page 

Orkney: Ancient North Sea Haven June 1998,  p. 46-61

Living with Natural Hazards  July 1998,  p. 3-40 

Mount St. Helens May 2000, p. 106-125 

California Trail: Blazing the Way West September 2000, p. 34-63; also ”On Assignment”

Columbia:  A River Dammed April 2001, p.2-34; also on the issue’s “On Assignment” page

Once and Future Fury: California’s Volcanic North October 2001, p. 68-83; “On Assignment”

Food: How Safe? How Altered? May 2002, p. 2-51; also “On Assignment”

Change of Heartland: America’s Great Plains May 2004 and...

Pulling Together: 30 Years in the Life of Cuba, Kansas  May 2004, page 2-53; also on the issue’s “From the Editor,” “Final Edit,” and “On Assignment” pages

Celt Appeal  March 2006,  p. 74-95; also, “Inside National Geographic.

Flint Hills April 2007; also, “Inside National Geographic.

Our Good Earth September 2008; also, “Inside National Geographic.

End of Night November 2008; also, “Inside National Geographic.

Food Ark July 2011.

King James Bible December 2011.