Ken Musgrave of Fast Company comes to the conclusion that we need a "unit" of green measurement for products, much the same way that calories and fat grams are used in food. Yes, but it won't be so easy.
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A new hydropower prototype from the University of Michigan could end up using even slower river and ocean currents to generate energy. VIVACE, which stands for Vortex Induced Vibrations for Aquatic Clean Energy, can generate power from as little as 2 knots, making it more useful than most turbine and water mill systems out there, which need an average of 5 to 6 knots to operate efficiently.
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