What do we mean when we call something “zero carbon”? Its definition is self-evident, like “gluten free” or “tax-deductible.” But does the term need a qualifier?
The nomenclature of sustainable design has evolved in the last two decades. From humble beginnings (“green building”) to regenerative pathways (“living building”), the terms and superlatives we use are meant to distinguish excellence. “Net zero energy,” “carbon neutral,” “emissions free”—these and related permutations are bandied about by government actors at United Nations climate summits and by nearly every corporation looking to make good on their ESG (environmental, social, and governance) pledges. The designations are leveraged at all scales, from single-family houses to entire nation states. They are now commonplace. So, why the confusion?
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