Environmental Economics:

A sub-field of economics concerned with environmental issues. It has become a widely studied topic due to growing environmental concerns in the twenty-first century. Quoting from the National Bureau of Economic Research Environmental Economics program:

… Environmental Economics … undertakes theoretical or empirical studies of the economic effects of national or local environmental policies around the world … . Particular issues include the costs and benefits of alternative environmental policies to deal with air pollution, water quality, toxic substances, solid waste, and global warming. –

Environmental economics is distinguished from ecological economics in that ecological economics emphasizes the economy as a subsystem of the ecosystem with its focus upon preserving natural capital.[2] One survey of German economists found that ecological and environmental economics are different schools of economic thought, with ecological economists emphasizing “strong” sustainability and rejecting the proposition that natural capital can be substituted by human-made capital.

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Ecological economics

(Also called eco-economics, ecolonomy or bioeconomics of Georgescu-Roegen) is both a transdisciplinary and an interdisciplinary field of academic research addressing the interdependence and coevolution of human economies and natural ecosystems, both intertemporally and spatially. By treating the economy as a subsystem of Earth’s larger ecosystem, and by emphasizing the preservation of natural capital, the field of ecological economics is differentiated from environmental economics, which is the mainstream economic analysis of the environment.  One survey of German economists found that ecological and environmental economics are different schools of economic thought, with ecological economists emphasizing strong sustainability and rejecting the proposition that natural capital can be substituted by human-made capital (see the section on Weak versus strong sustainability  –
Ecological economics was founded in the 1980s as a modern discipline on the works of and interactions between various European and American academics (see the section on History and development below). The related field of green economics is, in general, a more politically applied form of the subject.
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