Sept. 26, 2008 - Hewlett-Packard has released emissions data associated with its largest suppliers, representing more than 80% of the company's costs for the materials, manufacturing, and assembly of its products.

Still foot-dragging on reporting your company's financial risk from climate change? Your days are numbered, says Will Sarni.

Aug. 25, 2008 - Packaged food giant ConAgra has unleashed a full-scale effort to curb its carbon footprint, joining the U.S. EPA's Climate Leaders and Energy Star programs and committing to stringent emissions reporting standards outlined by the international Carbon Disclosure Project.

Aug. 7, 2008 - Dell says it has either reduced or offset 100% of the company's carbon impact from global operations - months ahead of its end-of-year deadline.

June 25, 2008 - The Carbon Trust - the British government-backed organization that brought carbon labels to the Tesco supermarket chain - has launched a certification scheme to help companies prove they are making real progress in carbon management.

May 13, 2008 - Top companies including Ford, Alcoa, and Wal-Mart have founded a new climate reporting registry in Brazil, the world's fifth-largest emitter of greenhouse gases.

What would happen if a company publicly committed to carbon neutrality - only to be shocked by the results of its carbon footprint assessment? REI found out the hard way when, after pledging to go carbon neutral 2020, it discovered that its eco-travel business – not its retail operation – is the company’s biggest carbon-emissions culprit. By Will Sarni

April 10, 2008 - Ford has revealed to investors exactly how it plans to reach its stated goal of reducing greenhouse gas emissions from its new vehicle fleet by at least 30% by 2020. The decision to publish the emissions-reduction plan came in response to a series of climate-related shareholder resolutions filed by institutional investor groups, which have since been withdrawn.

April 9, 2008 - Fiji Water has unleashed a major communications effort to disclose the carbon footprint of its products from sourcing to production to distribution. The company has created a dedicated green website where consumers will have access to lifecycle emissions data for its bottled water.