Over the last two days, we've explored many of the trends in offices and buildings where you work. Now, we look inward to office interiors. Kevin Kampschroer is the chief sustainability officer at the General Services Administration, and director of the Office of High Performance Green Buildings. Environmental psychologist Judy Heerwagen is a program expert in that office. In the final part of our special report, "The Federal Office of the Future," they tell Federal News Radio's Lauren Larson more about the evolution of personal workspaces, and the planning required before choosing a new office. Read Tom Temin's related story.