I'll quickly answer the first question. A number of studies have been done in schools and hospitals, at the workplace, but they're individual studies and they're not necessarily done under the green building auspices; they're just certain design elements like day lighting, natural ventilation, which is better for students or for patients, and so on.
A study by the National Research Council on evaluating the occupancy of green buildings was just released in the new year. It was a three-year, million dollar study that does point to the indoor environmental benefits of green buildings, and the reference to many LEED-certified buildings shows that they have a positive effect on the workforce.
That's available on our website, and I'll be happy to forward you a copy. It's a very important, very good study.