The Maori walked it to gather the greenstone (jade) from which they crafted tools and weapons.

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

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Pfizer has a generic drug division named Greenstone and some consumers might feel most comfortable asking for the Greenstone generic Lipitor.

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The latter consists of an introductory course to Greenstone where participants will be requested to design an implementation plan to create a digital library.

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Greenstone is studying the local health effects of fracking, but he said it's not scientifically accurate to ignore "the tremendous health gains" from the coal-to-gas shift.

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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.

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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.

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