Aug. 8, 2008 - After a successful pilot in Colorado and Ohio, Allstate is expanding its program to offset drivers' auto emissions by funding reforestation and clean energy projects in the U.S.

Aug. 6, 2008 - Method is getting more bang for its carbon-offset buck, giving priority to renewable energy projects that reduce carbon emissions within the company's own supply chain.

July 9, 2008 - A San Francisco engineering firm is charging clients an extra 0.05% to support its purchase of renewable energy credits - one of a number of small businesses that are looking to customers for help in financing their low-carbon efforts, the Wall Street Journal reports.

June 16, 2008 - U.S. shipping giant Horizon Lines has unveiled a companywide plan to boost performance in the areas of environmental protection and climate management.

May 1, 2008 - The Philadelphia Phillies have purchased 20 million kilowatt-hours' worth of renewable energy certificates to offset the team's electricity use at Citizens Bank Park.

April 23, 2008 - Dole has pledged to offset ithe carbon dioxide emissions from transporting its bananas and pineapples from Costa Rican packing plants to points of export from the country.

April 8, 2008 - Marriott International has outlined a sweeping five-point plan to reduce the environmental impact of its global operations, headlined by a new $2 million carbon-offset deal to preserve endangered rainforests in Brazil. The hotel chain says it aims to reduce its climate footprint, optimize resource efficiency, green the global supply chain, build greener hotels, and engage employees to take environmental action.