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Concerns about nutrient pollution in the Chesapeake Bay have led to the establishment of pollution limits—total maximum daily loads (TMDLs)—which, by 2025, are expected to reduce nitrogen loadings t...
The investment approach says that, as long as the rate of return to investment is positive, we need to invest less than a dollar today to obtain a dollar of benefi ts in the future. Under the inve...
We propose a simple to implement panel data method to evaluate the impacts of social policy. The basic idea is to exploit the dependence among cross-sectional units to construct the counterfactuals.
There has been a widely accepted belief that certain labor market institutions, including high taxation and generous benefits, can lead to low employment and/or high unemployment. To what extent do su...

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