The State of Green

Here's a look at some alternative energy sources such as wind, solar, and ethanol, and the challenges companies in those areas face

Talk to the pioneers of green technology and they'll tell you these days they spend less time hard-selling the allure of renewable energy, and more hours managing shortages of materials, labor, and manufacturing capacity. Instead of evangelizing new markets, their focus has shifted to the practical: how to build new plants while driving down costs to make their products and services more competitive.

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