And, do not forget to check out the CDP

The reporting standard.

Supply Chain Management: 
http://www.cdp.net/en-US/Programmes/Pages/CDP-Supply-Chain.aspx 

General Climate Change:
http://www.cdp.net/en-US/Programmes/Pages/climate-change-programs.aspx 

Water:
 http://www.cdp.net/en-US/Programmes/Pages/cdp-water-disclosure.aspx 

Forests: 
http://www.cdp.net/en-US/Programmes/Pages/forests.aspx 

New promo for CDP supply chain measurement etc by Walmart:
http://vimeo.com/83839700