Sustainable cities must look beyond city limits

City leaders aspiring to transform their cities into models of sustainability must look beyond city limits and include in their calculation the global flow of goods and materials into their realm, argue researchers in the ...

Setting sail in an ecological 'Earthship'

Could sustainable architecture address pollution, climate change and resource depletion by helping us build self-sufficient, off-grid, housing from "waste", including vehicle tires and metal drinks containers? That's the ...