Architect Magazine has unveiled its list of the 50 best architecture firms in the US, with Adrian Smith + Gordon Gill Architecture, Skidmore, Owings & Merrill and Gensler taking the top three slots in the overall ranking, respectively. The rankings are based on scores from three categories: business, sustainability and design. This year the methodology was updated to include three new factors: percentage of women and minority designers; range and value of employee benefits and the rate of employee turnover. Adrian Smith + Gordon Gill Architecture also ranked first in the business category, followed by Kirksey Architecture and EYP Architecture & Engineering. EYP also headed the sustainability rankings, followed by Gensler and ZeroEnergy Design, while the design rankings were led by NADAAA, Skidmore, Owings & Merrill and Studio Gang Architects. Learn more about the methodology and view the full rankings here.