Using green algae to produce hydrogen

Researchers at the University of California at Berkeley have engineered a strain of green microalgae that could, with further refinements, produce vast amounts of hydrogen through photosynthesis. The breakthrough also could have application in a wide range of products, from biodiesel to cosmetics. Present efficiency is at around 30 cents / kW-h. In 2000, when the technology was first announced, they were at 300 cents / kW-h.

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