Which architectural firm pioneered the 'Living Building Challenge' certification program that requires buildings to generate more energy than they consume?

Sustainability has become a cornerstone of modern architectural practice. Leading firms are increasingly implementing innovative approaches to reduce environmental impact and create more sustainable built environments. This poll tests your knowledge of major sustainability initiatives that have shaped contemporary architectural practice and set new industry standards.

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McLennan Design, founded by Jason F. McLennan who created the Living Building Challenge before establishing his firm
Foster + Partners, who integrated the program into their Masdar City development
Bjarke Ingels Group (BIG), as part of their 'hedonistic sustainability' philosophy
Gensler, who implemented it first in their Shanghai Tower project