According to the United Nations Environment Programme (UNEP), which launched its Green Economy Initiative in 2008, a green economy is one that results in improved human well-being and social equity, while significantly reducing environmental risks and ecological scarcities, it is low-carbon, resource-efficient and socially inclusive (UNEP, 2011). This general definition integrates economic, social and environmental concerns in ways akin to sustainable development. Yet in practice, as the World Survey shows, there are many versions of green economy thinking. It is argued that the emerging green technology economy will be worth $4.2 trillion annually by 2020.’3 Other strands emphasize market-based approaches to environmental protection through financial valuation of natural capital, payments for ecosystem services and schemes for trading carbon and biodiversity credits and offsets.