DNA Info reports the announcement from Mayor Emanuel that the City is doubling Retrofit Chicago’s Commercial Business Initiative to include 32 structures. Participating buildings are encouraged to compete in achieving energy consumption reductions through the Chicago Green Office Challenge. Read the article.

Chicagoland Building and Environments capture the color and buzz at the launch event for Chicago’s Green Office Challenge earlier this month, and profiles the team behind this year’s Challenge. Read the article and browse the photos.

Mayor Rahm Emanuel has announced the launch of round three of the Chicago Green Office Challenge. The Challenge has achieved major cuts in energy, water, waste and greenhouse gas emissions, in previous years, and this year goals are even higher. Delta Institute is one of the partners running the program, which is open for registration by Chicago businesses until the end of March. Read Chicago Challenges Offices to Go Green

Improving environmental impacts is a win-win for major companies, suppliers and customers. There is a real opportunity for suppliers to step up on sustainability, with the shift towards corporate social responsibility and increasing demands for sustainability from leading companies. Ahead of presenting on these issues at a panel co-hosted by Delta, Tom Cushing examines them in an article published in Environmental Leader. Read "Supplying Sustainability: Real leaders must look down the chain"