When you are watching a television show and see someone get their heart shocked back into a rhythm, you will see their entire body rise up in the air. That's what happens when a defibrillator is used, because the shock is that powerful. As VOA's Carol Pearson reports, scientists are now working on better, more effective, and less-shocking ways to get a heart to start beating once again.
3-D printing is rapidly changing the process of industrial manufacturing as researchers find innovative ways to employ the new technology. At the recent ARPA-e conference, organized by the U.S. Department of Energy, scientists from the University of Maryland showcased an advanced 3-D printer, combined with a wire-laying head, that cuts in half the time needed to manufacture heat exchangers, an important part used in many devices from computers to power plants. VOA's George Putic reports.