The Ecological Citizen Vol 3 Suppl A 2019: 87–91
Conservation biologists have called on human society to give half the Earth back as natural habitat for our fellow species. This idea has prompted debates about population size, economic production and per capita consumption, and the distribution of conservation's benefits and burdens, in the 'other half'. This paper reviews some key aspects of these debates, and presents an empirical analysis of the relative importance of population versus per capita consumption as drivers of environmental impact. It concludes by asserting an overall synergy, rather than any fundamental trade-off, between the half-Earth and de-growth movements.