Architecture Puzzler #343

In response to concerns about climate changes, there has been a movement in several areas of the country to require higher levels of environmental responsibility in the design and construction of buildings. In some cases this effort is led by architects, such as in Oregon, where architects have helped initiate legislation (not yet adopted) requiring state-funded buildings over a certain size and cost to meet LEED (Leadership in Energy and Environmental Design) Gold standards. Many of us think of "green" architecture as being mostly concerned with energy conservation. LEED addresses energy and four other major areas of concern. What are the four other areas that LEED addresses?

Stainless steel should probably be considered stain-less rather than stain-proof since it is not unusual to see some rusting on stainless steel. How could some of this rusting be prevented during fabrication?