Futureproofing our infrastructure with the Ecological Footprint (pdf, 208 kB)
Originally published at CSR-Compass in the "Voice of Stakeholders" column.
November 2007
The Ecological Footprint of Biofuels (unpublished draft) (pdf, 140 kB)
September 2007

Building the marketplace of the future (pdf, 104 kB)
Originally published at Greenbiz.com in the "The Sustainable MBA" column.
October 2005
Competitive advantage and the introduction of sustainable products or services (pdf, 284 kB)
March 2005
Product Stewardship in the internetworking industry (pdf, 1.3 MB)
April 2005