as i say, more on the website, bbc.com/news. >> make sense of international news at bbc.com/news. >> funding was made possible by the freeman foundation of new york, stowe, vermont, and honolulu. newman's own foundation. and union bank. >> at union bank, our relationship managers use their expertise in global finance to guide you through the business strategies and opportunities of international commerce. we put our extended global network to work for a wide range of companies, from small businesses to major corporations. what can we do for you? >> bbc world news was presented by kcet los angeles.

. >> much more at bbc.com/news. you can find out the latest on what is going on in afghanistan. >> this is bbc world news. the main headlines, militants in afghanistan open fire on a senior government delegation in the village where an american soldier killed 16 people. two internet giants go to court as yahoo accuses facebook of infringing 10 of its patents. eating red meat can dramatically increase your risk of dying prematurely according to scientists in america. researchers found regular consumption of red meat, sausage and bacon increase the risk of ha heart decease and cancer. >> it has been generally accepted that too much red meat isn't good for our health. this study the risks may be greater than previously thought. scientists look to the data over 120,000 people over a number of years. they found eating an extra portion of red meat each day increased risk of death by 13%. eating an extra portion of processed meat each day increases the risk by 20%. >> both processed and unprocessed red meat am higher risk o

. >> much more, of course, at the website, bbc.com/news. the latest on all our stories and lots of background added. >> this is "bbc world news." i'm geeta guru-murthy. the headlines for you -- a rogue afghan army soldier kills two nato troops at a base in the south of the country. president obama begins talks with his chinese counter part to discuss their joint interest in addressing iran and north korea's juke lawyer agenda. the hollywood director, james cameron, has become the first person in more than half a sent troy reach the deepest -- more than half a century to reach the deepest place of the earth. he was in a specially designed sub radio mean. he tweeted, "hitting bottom never felt so good." he spent almost three hours filming and exploring the deaths of the mariana trench in the pacific. his first the first solo dive to reach the bottom. our correspondent joins us from guam, the nearest place to the mariana trench. she gave us the latest. >> right now, at the moment, about 300 kilometers out to sea, the director is celebrating, ha

sense of international news at bbc.com/news. >> funding was made possible by the freeman foundation of new york, stowe, vermont, and honolulu. newman's own foundation. and union bank. >> at union bank, our relationship managers work hard to understand the industry to operate in, working to nurture new ventures and help provide capital for key strategic decisions. we offer expertise and tailored solutions in a wide range of industries. what can we do for you? >> bbc world news was presented by kcet los angeles.

don't forget the website bbc.com/news. do stay with us. let's look at some of the news organizations across the states are reporting the super tuesday republican primaries, starting in mitt romney's home state of massachusetts. he was the winner there. but his rivals are still hanging on and he lost four of the other nine states. one of the states where he lost was tennessee. rick santorum's victory there along with his two other wins is likely to prolong the battle to become the republican nominee. another state to reject mr. romney is georgia, favoring newt gingrich. ohio was won by mr. romney. and mr. romney was declared the winner of super tuesday by the washington times but it says that rick santorum has solidified his claim as the conservative alternative in the american heartland. get lots more on our web site bbc.com. updating the top stories on bbc world news. six british soldiers have been caught in a bomb attack in afghanistan. they have likely been killed. flags are flying at half mast. on the biggest day of primary elections, m

. >> make sense of international news at bbc.com/news. new york, stowe, vermont, and honolulu, newman's own foundation, and union bank. >> at union bank, our relationship managers work hard to understand the industry you operate in, working to nurture new ventures and help provide capital for key strategic decisions. solutions in a wide range of industries. what can we do for you? >> "bbc world news" was presented by kcet los angeles.

. >> make sense of international news at bbc.com/news. >> funding was made possible by the freeman foundatin of new york, stowe, vermont, and honolulu. newman's own foundation, and union bank. >> at union bank, our relationship managers use expertise in global finance to lead you through the opportunities and strategies of global commerce. we put our expertiese to work for smalll busine businesses and major corporations. what can we do for y

. >> make sense of international moves -- news at bbc.com/news. >> funding for this presentation is made possible by the freeman foundation of new york, stowe, vermont, and honolulu, newman's own foundation, and union bank. >> at union bank, our relationship managers work hard to know your business, offering specialized solutions and capital to help you meet your growth objectives. we offer expertise and tailored solutions for small businesses and major corporations. what can we do for you? >> "bbc newsnight" was presented by kcet, los angeles.

. >> make sense of international news at bbc.com/news. >> funding was made possible by -- the freeman foundation of new york, stowe, vermont, and honolulu, newman's own foundation, and union bank. >> at union bank, our relationship managers use their expertise in global finance to guide you through the business strategies and opportunities of international commerce. we put our extended global network to work for a wide range of companies, from small businesses to major corporations. what can we do for you? >> "bbc world news" was presented by kcet los anges.

. >> you are watching "bbc world >> make sense of international news at bbc.com/news. >> funding was at union bank, our relationshi(ç managers work har to understand the industry you operate in. working to nurture new ventures and help provide capital for key strategic decisions. we offerç expertise and tailor solutions in a wide range of industries. what can we do for you? >> "bbc world news" was >> "bbc world news" was angeles.

. >> make sense of international news at bbc.com/news. >> funding was made possible by -- the freeman foundation of new york, stowe, vermont, and honolulu, newman's own foundation, and union bank. >> at union bank, our relationship managers use their expertise in global finance to guide you through the business strategies and opportunities of international commerce. we put our extended global network to work for a wide range of companies, from small businesses to major corporations. what can we do for you? >> "bbc world news" was presented by kcet los angeles. (george chattering excitedly) this program was made possible by: >> chuck e. cheese's, proud supporter of pbs kids, who know of all the things a kid can learn, one of the most important is learning to laugh. pbs kids, where a kid can be a kid. for over 90 years, stride rite's been there, from the first wobbly walk to the first day of school, helping you choose the right shoes. stride rite is a proud sponsor of curious george. funding for curious george is provided by contributions to your pbs station... ooh. ...and from: ( livel