For 10 weeks this summer, Ryan Whisnant gets to be the green conscience of SunGard Data Systems Inc. He'll tell the software company, for example, if it's using too many bulbs to light its offices in Wayne, and if it should keep the temperature higher. SunGard brought in Whisnant, a graduate student at the University of Michigan, to help the company cut its energy use and costs.
Grad students show businesses it's easy being green
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