“…By using the headline indicators of ecological footprint and carbon footprint, BioRegional suggests ten principles for one planet living-health and happiness, equity and local economy, culture and community, land use and wildlife, sustainable water, local and sustainable food, sustainable materials, sustainable transport, zero waste, and zero carbon [61]. In a similar way, Spengler [43] positions the sufficiency concept as a central policy concept for emerging areas of SCP such as mobility, housing, appliances, and products, emphasizing that "[s]ufficiency as policy would . .…”