This morning we take a look at one way to reduce our impact on the environment … green building. Commercial buildings use 36 percent of our electricity and produce 25 percent of our green house gases; residential buildings contribute a large share, too. So architecture is an area with a lot of potential for environmental improvement.

We talk with Curt Ellis, one of the filmmakers behind “The Greening of Southie,” who spent nearly a year documenting the construction of Boston’s first L.E.E.D.?certified residential building, the Macallen Building. We’re also joined by Yvan LaCroix, construction foreman on the Macallen Building.