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World Watch Magazine, July/August 2007, Volume 20, No. 4

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Carbon Offsets 101
By Anja Kollmuss
Green Tags
By Bruce Barcott
A Burning Issue
By Heather Augustyn
Departments
Life-Cycle Studies: Umbrellas
From Readers: Clones, Cuba, and carbon crimes
Eye on Earth
Matters of Scale
Matters of Scale - Into the Toilet
Online-Only Content
Sources and Resources for “Carbon Offsets 101”
Sources and Resources for “A Burning Issue”
Sources and Resources for “Green Tags”