In response to the recent national tragedy, Yahoo has compiled a list of organizations to which you may contribute.
Yahoo has compiled a list of organizations to which you may contribute to aid in disaster relief. The list includes the American Red Cross, Save the Children, United Way of New York, and many others. In addition the list includes sites that provide emergency contact information. You can find the list here.
Using various slices of the RF spectrum for sensing rather than communications has fascinating potential and some impressive implementations, but there are still many significant challenges, especially in the terahertz (sub-mm) band.
Using environmental energy to power remote sensor nodes remains a high interest item among system designers, especially those choosing wireless sensor node (WSN) components for remote and/or hazardous locations. At the Sensor Expo conference in Santa Clara, Calif., presenters at an energy harvesting and power symposium agreed that energy harvesting systems still require juggling many variables.