from http://unep.org/wed/ UNEP web site:
The UN Environment Programme defines the Green Economy as one that results in improved human well-being and social equity, while significantly reducing environmental risks and ecological scarcities. In its simplest expression, a green economy can be thought of as one which is low carbon, resource efficient and socially inclusive.
Practically speaking, a Green Economy is one whose growth in income and employment is driven by public and private investments that reduce carbon emissions and pollution, enhance energy and resource efficiency, and prevent the loss of biodiversity and ecosystem services. These investments need to be catalyzed and supported by targeted public expenditure, policy reforms and regulation changes.
The 2012 World Environment Day theme is Green Economy: Does it include you? 2012 is also the 40th anniversary for World Environment Day, since the creation of the United Nations Environment Programme (UNEP) in 1972.
In this significant year for the environment and sustainable development, the world leaders will once again meet at the United Nations Conference on Sustainable Development twenty years after the historic Earth Summit in Rio de Janeiro, 1992.
Dubbed Rio+20, one of the main themes of this Summit is ‘a green economy in the context of sustainable development and poverty eradication’.