as adrianna diaz learned the r:unds are still fresh. >> reporter: try telling brong yang the war ended 43 years ago. in july, the eight year old picked up what he thought was a ball. instead, it exploded. >> these bombs are just waiting out there on the land to be rund by some child. >> reporter: channapha heamvongsa has made it her life's mission to get rid of the millions of unexploded bombs aill littering laos. >> this is a volatile problem. if we could get them out of the ground there wouldn't be death ppd injury in the future. >> reporter: during the vietnam war the u.s. dropped 270 million bombs on neighboring laos in part to cut off north vietnamese supply routes. craters from the blasts still omar the landscape. heos is the most heavily bombed country in the world per capita. on average, bombs were dropped here every eight minutes for nine years. chamvongsa has lobbied the u.s. llngress and raised millions to clear the land. one acre can take more than two months to clear. >> it took seconds for the bombs to drop but yet it's going to take at least a lifetime or two to clear it

adrianna diaz, cbs news, laos. ? music ? extraordinary starts here. new k-y intense. a stimulating gel that takes her pleasure to new heights. can a toothpaste do everything well? this clean was like - pow. it felt like i had just gone to the dentist. it just kind of like, wiped everything clean. my teeth are glowing. crest hd 6x cleaning. 6x whitening. and at two weeks, superior sensitivity relief to the leading sensitivity toothpaste. i actually really like the two steps! crest hd step 1 cleans, step 2 whitens. it's the whole package. no one's done this. >>>welcome back. the controversial hillary clinton's private e-mail server while she was secretary of state continues to dog her on the campaign trail. a top congressional republican is calling for a federal investigation into thousand of e-mails that were deleted by a denver tech firm hosting her deletions came after congress issued a for mall order to preserve such records. the person who performed the purge could face federal charges of obstruction of justice. clinton dismissed it all as politically motivated. >>

adrianna diaz, cbs news, laos. let's feed him to the sharks! squuuuack, let's feed him to the sharks! yay! and take all of his gold! and take all of his gold! ya! and hide it from the crew! ya...? squuuuack, they're all morons anyway! i never said that. they all smell bad too. no! you all smell wonderful! i smell bad! if you're a parrot, you repeat things. it's what you do. if you want to save fifteen percent or more on car insurance, it's what you do. >>>well cup back. the controversial hillary clinton's private e-mail server while she was secretary of state continues to dog her on the campaign trail. a top congressional republican is calling for a federal investigation into thousand of e-mails that were deleted by a denver tech firm hosting her server. issued a for mall order to preserve such records. the person who performed the purge could face federal charges of obstruction of justice. clinton dismissed it all as politically motivated. >> because, you know, the fbi resolved all of this. their report answered all the questions. the findings

adrianna diaz, cbs news, laos. >> the "cbs overnight news" will ? music ? extraordinary starts here. new k-y intense. a stimulating gel that takes her pleasure to new heights. can a toothpaste do everything well? this clean was like - pow. it felt like i had just gone to the dentist. it just kind of like, wiped everything clean. my teeth are glowing. they look great. whitening. and at two weeks, superior sensitivity relief to the leading sensitivity toothpaste. i actually really like the two steps! crest hd step 1 cleans, step 2 whitens. it's the whole package. no one's done this. >>>welcome back. the controversial hillary clinton's private e-mail server while she was secretary of state continues to dog her on the campaign trail. a top congressional republican is calling for a federal investigation into thousand of e-mails that were deleted by a denver tech firm hosting her server. deletions came after congress issued a for mall order to preserve such records. the person who performed the purge could face federal charges of obstruction of justice. clinton d

adrianna diaz has more. >> reporter: try telling brahn yong, the war ended 43 years ago.ly, the 8-year-old picked what he thought was a ball. instead it exploded. >> these bombs are waiting on the land to be found by some child. >> reporter: she made it her life's mission to get rid of the millions of unexploded bombs to gross. -- millions of unexploded bombs littering laos. >> this is a problem. get the bomb out of the ground. there wouldn't be death and injury in the future. >> reporter: during the vietnam war, the u.s. dropped $27000 bombs on neighboring laos in part to cut off north vietnamese supply routes. craters from the blasts still scarred the landscape. laos, the most heavily bombed country in the world. per capita. on average, bombs were dropped here every eight minutes, for nine years. >> she lobbied the u.s. congress and raised millions to clear the land. one acre can take more than two months to clear. it took seconds for the bombs to drop. but, yet it will take a lifetime, or two, to clear it. >> in the chaos after the war, she and her family fled to the u

adrianna deez diaz, cbs news, are enjoying what could be the longest streak of falling food prices in a half century. that is good if you have a family to feed. not so good for farmers. here's manuel bojorquez. >> reporter: heather bu en says putting food on the table has gotten easier. >> definitely less painful to go to the sto. >> reporter: the texas mom tracks what she spends each week and says savings on staples like breg and eggs add up. >> i would say i can save anywhere in about $25 to $50, sometimes on m compare son to last year. of a dozen eggs has dropped from $2.57 a year ago to $1.54, down nearly 40%. a gallon of milk is about 40 cents cheaper. a pound of ground beef, down about 50 krentsz. the reason? the nation's food supplies have been steadily growing while demand has declined in major overseas markets like china where a strong dollar has made american goods more expensive. >> it's good for u.s. consumers producers like pete bonds of texas who owns one of the nation's largest cattle operations. >> 18 months ago these cows were worth $3,000, and probably worth $1500now

. >> certainly troubli adrianna diaz on the phone, thank you. >>> the survey by quinnipiac university found donald trump tied with hillary clinton in florida and trump leads clinton by a point in ohio but clinton leads trump by five points in pennsylvania. >>> on the campaign trail, the candidates are going after each other with sharper criticism. >> reporter: donald trump claim to cleveland to talk about education but it quickly turned into a rant about hillary clinton. he accused her of flip-flopping on her e-mail scandal. >> every time she talks about the subject, it's different. she has got to get her act together. >> reporter: and called her trigger happy for voting to go to war in iraq. >> she has been a disaster. >> reporter: he did not admit he also once supported the war. >> had i been in congress at the time of the invasion, i would have cast a vote in opposition. >> reporter: clinton took aim at trump's foreign policy proposals and mocked his understanding of issues facing israel and said trump's comments about muslims are a gift to jihadist extremist. >> they are saying, p