jack ohman will join us. leading california gop candidates sit with senior political editor scott shafer to share their vision. >>> first, bay area based tesla is expected to build what's supposed to be the largest manufacturer of lithium ion batteries, rising from a nevada desert near reno and touted as a potential game-changer in the efforts to reduce greenhouse gases. the manufacturer is not only manufacturing batteries, but also producing a new generation of battery for the home. lauren summer got a rare look inside the factory and joins us now. hi, lauren. >> hi. >> how big is this factory. >> when i went to visit, it's just a small peace piece of it, but it's 800,000 feet already. when it's done, it will be 5.8 million square feet. that's 100 football fields. this is one building, one massive building where one wall is 3/4 mile. scale is what we're going for. the whole idea is ramp up production of batteries and cars. >> why is it so important for them to have their own production? >> batteries have bee

jack ohman will join us.eading california gop candidates sit with senior political editor scott shafer to share their vision. >>> first, bay area based tesla is expected to build what's supposed to be the largest manufacturer of lithium ion batteries, rising from a nevada desert near reno and touted as a potential game-changer in the efforts todu

jack ohman will join us. leading california gop candidates sit with senior political editor scott shafer to share their vision. >>> first, bay area based tesla is expected to build what's supposed to be the largest manufacturer of lithium ion batteries, rising from a nevada desert near reno and touted as a potential game-changer in the efforts to reduce greenhouse

plus, see our special series from jack ohman, who won for his editorial cartoons. >> sreenivasan: also on the newshour online: the weather's getting warmer, and people want to get out of the office-- including potential employers. in our "ask the headhunter" column today: the do's and don'ts of interviewing in a bar. and how a music program is helping underserved youth in austin, texas, by teaching kids to play the steel drums. we have a video from member station klru. all that and more is on our web site, pbs.org/newshour. time to vote in new york ticked down as voters headed to the polls in the presidential primaries.. democratic and republican candidates campaigned furiously ahead of the vote. a two-man taliban raid shook the afghan capital of kabul, killing 28 people and wounding hundreds more. the target was a government security agency near the presidential palace. and the death toll in last weekend's earthquake in ecuador rose to 433. international rescue teams fanned out to look for the dozens of people still missing. >> woodruff: tonight on charlie rose, more of charlie's inte