Before the series gets into full swing, the doctor thought he'd point out a few classic posts that are worth a re-read if you haven't read them lately:

Purchasing Certification Blog
Green Supply Chain & Dr. Seuss
Using Diverse Suppliers
Animal Friendly Purchasing in Action

Sourcing Innovation
JLP Responsible Sourcing Part XI: Environment
Sustainable Procurement Supply Management Style: Part I
Design for Recycle
Sustainability Should Be Soldered Into Your Platform

Strategic Sourcing Europe
Back to Basics: Green & Sustainable
Reporting on Sustainability

Supplychainer
Exploring the "True" Cost of Greening Supply Chain Management
What you should do to green your supply chain
Extending social responsibility to the whole value chain: supplier ethics audit

Supply Excellence
Wal-Mart's Next Move: Poster Child for Sustainable Supply Strategies
2007: The Year of Sustainable Supply Strategies
Sustainable Supply: There's No Denying It
Still More Reasons Why Sustainability is Good for Business
Misfi(RED)
Sustainability: Think Inside the Box
Carbon Offsets: Common Business Practice of Short-Term Fix?

And, of course, Tim Albinson's new blog, 2Sustain is dedicated to the issue of sustainability.