There also have been studies done that showed people recover faster and are discharged earlier in green buildings.

Green building primarily started on the coasts. Now it's making its way toward the middle of the county. We have projects in every state now.

We can't certify them until they're ready for occupancy. Right now, 5 percent of the new commercial construction market is building to the LEED standards. Five percent sounds like a small number, but when you look at it in terms of square footage, it's 243 million square feet.