Telecom equipment maker Nortel Networks said on Friday that it will sell its advanced wireless technology business to Nokia Siemens Networks NSN.UL for US$650 million and that it was making progress in talks to sell its other businesses. Nortel, once...

Researchers at Caltech, Pasadena, California have developed a micro-microscope on a chip. The  lens-free microscope that they say could be built for about ten dollars. "The whole thing is truly compact–it could be put in a cell...