The greenest building isn’t necessarily the latest and greatest, highest-scoring LEED-Platinum award winner, the one on the perfectly-graded-bioswale site with access to multiple forms of transit. Not that there’s anything wrong with that, of course: we need those buildings to keep pushing the envelope, both literally and figuratively.

No, the greenest building may look nothing like that. In fact, it may have been there all along, but maybe you didn’t notice it.

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