Engineers attempt to create better batteries

More and more of our gadgets, including our vehicles, are getting their electrical juice from batteries. With demand for alternative modes of power escalating, there is a sector of the tech community that's exploring the possibility of endless battery power. David Pogue of Yahoo Tech, and host of the "Nova" special "Search for the Super Battery," takes a look at technological efforts being made to create more powerful and longer-lasting batteries. Be sure to watch "Nova: Search for the Super Battery", airing on PBS