Today, the U.S. Green Building Council (USGBC) announced the Top 10 States for LEED, an annual ranking that highlights states throughout the United States that made significant strides in sustainable building design, construction and transformation over the past year.  LEED, or Leadership in Energy and Environmental Design, is the world’s most widely used and recognized green building rating system.

Topping the list is Massachusetts, which moved from third to first place with a total of 136 LEED certified projects representing 3.73 square feet of certified space per resident.

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