Maryann Thompson Architects

A longtime pioneer in sustainable architecture, Maryann Thompson has been turning passive lately — which impresses us even more. She's getting certified in Passive Housing, a German movement that strives to slash homes' energy usage by 90 percent. Given that its common-sense principles mesh well with Thompson's dedication to simple green solutions, we expect to see beautifully designed, incredibly energy-efficient homes popping up all over the Hub in the coming years.

Photo: Maryann Thompson Architects designed this geothermal residence in Boston to take full advantage of the sun's rays. Photo by Chuck Choi.