by Chris Bodenner

Scientific American describes a new term:

Overlooking the city of Stuttgart in southern Germany, a four-story modern glass house stands like a beacon of environmental sustainability. Built in 2000, it was the first in a series of buildings that are "triple-zero," a concept developed by German architect and engineer Werner Sobek, which signifies that the building is energy self-sufficient (zero energy consumed), produces zero emissions, and is made entirely of recyclable materials (zero waste).

The homes - which are also popping up in Boulder, Colorado - produce more energy than they consume.

(Hat tip: 3QD)

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