World Trade Center Building 7, Manhattan's first LEED certified skyscraper.

This directory lists architects that make a commitment to designing buildings that limit their impact on the environment. They design buildings that employ high-tech insulation to lower the energy used for heating and cooling, use recycled or recyclable materials, include energy harnessing devices such as solar panels or wind mills, use materials and devices reduce negatively impact the building's local environment such as paint with low volatility and wastewater recycling systems. The buildings that these architects design are often LEED certified, meaning that they have met strict requirements set by the United States Green Building Council.