But a study by Michael Greenstone of the Massachusetts Institute of Technology came to a more sobering conclusion.

但是麻省理工学院的迈克尔·格林斯的研究得出一个更让人清醒的结论。

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Researchers Michael Greenstone and Adam Looney estimate costs of a four-year college degree at $102, 000 and about $28, 000 for a two-year associate's degree.

研究员迈克尔•格林斯通和亚当•鲁尼估算，四年的大学本科学位要花费102,000美元，两年的专科学位要花约28,000美元。

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Recent work by, among others, Michael Greenstone at the Massachusetts Institute of Technology backs that approach.

ECONOMIST: Climate-change talks

That is a theme not adequately covered in the debate over fracking, agreed Michael Greenstone, an environmental economics professor at the Massachusetts Institute of Technology and a former top adviser to the Obama administration.

WSJ: Celebrity 'fractivists': True advocates or NIMBYs?

Michael Greenstone of the Hamilton Project, a liberal-leaning research group, thinks that could be done through the creation of a non-partisan congressional oversight body using the best evidence available to vet regulations, much as the Congressional Budget Office vets fiscal policy.

ECONOMIST: Measuring the impact of regulation