Ogilvy & Mather is expanding the agency’s global sustainability practice, and as a result has unified related offerings into a new entity: OgilvyEarth. The WPP Group owned agency calls the new practice, “the first global, cross discipline practice created to help businesses deal with the communications of sustainability as they move beyond “green marketing.”

One of OgilvyEarth’s initiatives is with the U.N. “to develop a campaign that builds awareness about the landmark United Nations Climate Change Conference in Copenhagen in December 2009, where 192 nations will negotiate a successor treaty to the Kyoto Protocols for limiting greenhouse gas emissions,” according to a company statement.

Jon Wentzel, Executive Vice President of OgilvyEarth, tells PRNewser, “Ogilvy is launching its global sustainability practice with several clients already place. This is really about bringing together the expertise and experience from all geographies and disciplines – PR, advertising, government affairs – together. Our work for current clients such as DuPont, Qantas and others will benefit from the change in our approach to providing best-in-class leadership.”

Ogilvy CEO Miles Young, “would not disclose revenue or profit targets for the new practice” according to the Financial Times, but did say that he “expected it to contribute to growth.”