Sometimes scientific and engineering discoveries can seem more like magic than the products of disciplined investigations. Nothing could be closer to this than the results announced by materials researchers at MIT. They have just produced photovoltaic (PV) cells printed directly onto special copy paper like you would find in any office printer. The result produced is Paper power, you might say. [caption id="attachment_5620" align="aligncenter" width="450" caption="Solar PV paper ...