Bytesize Science - Getting More Out of the Sun's Rays: Artificial Photosynthesis

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Summary: Matt Shaner, a graduate student in the Lewis Research group at Caltech, shows us a demo of an intriguing new technique in the production of hydrogen, a promising alternative fuel. Plants convert the sun's energy into sugar through photosynthesis. In this process, hydrogen is produced when the sun's rays hit a piece of silicon, a material often found in photovoltaic cells.