It’s only appropriate that Bjarke Ingels named his architectural group BIG. After all, this is the guy who learned at the foot of the legendary Rem Koolhaas, charted his “Yes is More” manifesto on a giant, 130-metre long carbon strip and gives TED talks on “hedonistic sustainability”. Big, however, means much more than scale. It means an expanded role for architects, who must think beyond the creation of buildings and embrace the challenge of designing sustainable, participatory ecosystems. It may sound all Danish, and we can live with that.