Emerging energy star

Microsoft Chairman Bill Gates recently invested millions in it. Morgan Stanley is a huge player. And scores of venture capitalists are starting to take a look as well. We’re talking corn, not cyberspace. Once the domain of farmer-funded cooperatives in Midwest backwaters, grain-based ethanol has become a rock star of energy investments as Wall Street money chases new projects from California to Maryland, where at least two efforts to build production plants are gaining momentum.

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