As environmentally friendly business offerings become de rigueur at PR firms across the country, agencies are finding that they must make their internal practices more "green," as well.

For one, Fleishman-Hillard recently pledged to become carbon-neutral by the end of 2008.

And Burson-Marsteller has taken the mandate of parent company WPP a step further and instituted its own, complementary eco-responsibility code. Efforts include reducing energy consumption through the use of more efficient office equipment; using more recycled materials during construction; ...