HOLLY RIDGE, N.C. — We pulled up to a picnic table and took stock of our camping gear.Out came the tent, cots, sleeping bags, kayak food. So much food. Finally, the objects of our little experiment: a ...

As Bob Dylan so aptly sang 44 years ago, "The Times They Are A-Changin'." Gasoline then was around 27 cents a gallon. The global effects of greenhouse gases and our pollutants were little more than ...