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Measuring the heath of urban greenery is costly but important. This Review presents the advantages and trade-offs of technology-supported tools to measure the health of urban greenery and highlights the importance of high-resolution urban greenery data to support cities in achieving Sustainable Development Goals.
Translating Earth system boundaries across scale involves scientific and normative judgements, with associated assumptions, bias and uncertainties. A protocol involving key building blocks and control steps in translation is presented with focus on businesses and cities, two understudied critical actors.
