Entrepreneurs are tapping into what could be the biggest economic opportunity of the 21st century: clean, money-saving technology.
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Verdant Power is bolting giant turbines to the floor of New York's East River in the hopes of using the rushing tides to generate clean energy. A local grocery store is already using the power.
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Watch out, Detroit. A new crop of electric-vehicle startups aims to put a dent in the Big Three by applying the latest in high-technology engineering and design.
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These firms are the last left in America making iconic products now in their twilight. More
