Stephen recently wrote a guest blog for his college roommate, Mario Insenga. Mario has built one of the most successful and environmentally-friendly companies in the world. His clients include the U.S. government (he's done work for the White House and the Pentagon), Marriott, Westin, and Hilton hotels, among many others. He was interviewed for a feature article in the Octorber 13, 2009 Wall Street Journal.

You can find Stephen's Guest Blog by clicking here and scrolling down to Corporate Responsibility and the Environment…in the Real World.

(From Left: Stephen, Diana Diekmann, and Mario Insenga.)