i'm arthel neville. it's time for sunday house call. >> joining us, professor marc siegel. >> and dr. david samadi from lenox hill hospital. good to see you, docs. >> happy passover. >> same to you. we start with major advances in cancer research this month. a new treatment was announced for melanoma that works by quinn jebtsing tumors with viruses that are wired to destroy them. how does this work? >> this is very exciting. we've been talking about viruses to kill cancer. but now they're finally starting to make head way. fighting cancer is like a war. but we're getting to the point now where we have guided missiles, where they go right into the cancer cells. and the biggest problem that had to be overcome was to teach the body that these cancer cells are foreign. because before cancer hid in the body. and melanoma is not being attacked by the immune system. they're taking a herpes, a cold sore virus and getting it to be pecked up by the melanoma cell. once it's in the cell, the immune system sees it an

. >> i'm arthel neville.hin the last hour the former secretary of state released this video telling americans she will be hitting the road to earn their votes. let's go straight to chief white house correspondent ed henry live in de mine, iowa, where mrs. clinton is expected to visit early as this week. what did mr. clinton say about her reasons for running in thatv video. >> this is the worst kept secret that it was coming. we were it wag for what

. >>> time now for "sun >>> i'm arthel neville. it's time for sunday house call. >> joining us professor marc siegel. >> and dr. david samadi from lenox hill hospital. good to see you, docs. >> happy passover. >> same to you. we start with major advances in cancer research this month. a new

. >> and i'm arthel neville. joining us is chief of robotic surgery, dr. samadi. >> and dr. marc siegel. he's a columnist at "usa today". >> congratulations. >> well, we are going to start today with a new study showing that americans have fewer types of gut bacteria than people in less developed countries. dr. samadi, it seems like this makes sense. what sort of gut bacteria are you talking about and why do we have less of it? >> we've spoken about this before but it's a very, very important thing. we have in our guts about 100 trillion, 100 trillion bacterias and some people have said that almost 90% of us are bacteria and 10% is human. so this co-existence in our gut is very important. a lot of good bacteria and bad bacteria. that balance, arthel, is very important. once you change that is when we start having a lot of chronic disease. diabetes, colitis. they looked at the u.s. population and compared it to people in new guinea that haven't been exposed to all of the antibiotics wewe have. what they find is the diversity of bacterias in those tribes are a lot more than us

. >> and i'm arthel neville. joining us is chief of robotic surgery, dr. samadi. >> and dr.gel. he's a columnist at "usa today". >> congratulations. >> well we are going to start today with a new study showing that americans have fewer types of

i'm arthel neville. welcome to america's news headquarters. >> hello, everyone. i'm eric shawn. topping the news this hour, it's been more than 50 years since a u.s. president and cuban leader have met but that streak ends today in a highly anticipated meeting that has both critics and supporters waiting. >>> secretary of state john kerry heading to the hill this coming week to make the case for the nuclear framework agreement with iran, but the senate may have other plans. >>> and there's some incredible video from astronauts aboard the international space station, shows everyone back on earth what it is really like to take a walk in space. >>> but first, it's almost official. hillary clinton set to announce she is running for president in 2016. that announcement will come sometime tomorrow, we are told, via social media. mrs. clinton then expected to head directly to iowa and most likely then follow to new hampshire, of course two key early voting states, to try and spend some quality time, they say, with the voters. something she did not always previously do in her white hous

welcome to america's news headquarters. >> i'm arthel neville.the news this hour, new reaction to the nuclear framework deal reached with iran this week, the president calling it a good deal. congress still has a say and some lawmakers are skeptical. >> a dramatic conclusion to what's being described as the largest cheating scandal in our history. 11 educators convicted for their roles in a standardized test scam in a case that's raising new questions about testing in american schools. >>> also, flooding in the heartland turns deadly after severe storms and drenching rain.

i'm arthel neville. welcome to america's news headquarters. >> hello, everyone. i'm eric shawn.been more than 50 years since a u.s. president and cuban leader have met but that streak ends today in a highly anticipated meeting that has both critics and supporters waiting. >>> secretary of state john kerry heading to the hill this coming week to make the case for the nuclear framework agreement with iran, but the senate may have other plans. >>> and there's some incredible video from astronauts aboard the international space station, shows everyone back on earth what it is really like to take a walk in space.

. >> i'm arthel neville.in to sell the framework deal with iran over its nuclear program. the president said it makes us safer. skeptics say it gets iran one step closer to getting the bomb. >>> new details, shocking details of three women who face terrorist charges. prosecutors say two of those women in new york city wanted to make history while the one in philadelphia, they say she wished to become a martyr. >>> and you just might want to put down that s

. >> i'm arthel neville. let the politics begin to sell the framework deal with iran over its nuclear program. the president said it makes us safer. skeptics say it gets iran one step closer to getting the bomb. >>> new details, shocking details of three women who face terrorist charges. prosecutors say two of those women in new york city wanted to make history while the one in philadelphia, they say she wished to become a martyr. >>> and you just might want to put down that salt shaker. a new report says most packaged foods have way too much sodium. the doctor is in on your health. >>> president obama again today defending the controversial framework nuclear deal that was reached with iran. he dedicated his weekly saturday address to it. critics say the deal concedes far too much to tehran and does not stop them from potentially building a nuclear bomb. israeli leaders say that the deal is a threat to their very existence. the president again insisted it is a good deal and he says will prevent iran from goin

. >> i'm arthel neville. topping the news this hour, new reaction to the nuclear framework deal reached with iran this week, the president calling it a good deal. congress still has a say and some lawmakers are skeptical. >> a dramatic conclusion to what's being described as the largest cheating scandal in our history. 11 educators convicted for their roles in a standardized test scam in a case that's raising new questions about testing in american schools. >>> also, flooding in the heartland turns deadly after severe storms and drenching rain. >>> there is new reaction right now to the framework nuclear deal that was reached this past week with iran. critics of course calling it a massive mistake that they believe concedes much too much to tehran. effectively they think allowing iran to eventually become a nuclear state in what certainly is an unstable region. today in his weekly saturday address, president obama praised the negotiators saying the deal is a good one and it meets all of our american goals. bu

. >> i'm arthel neville. within the last hour the former secretary of state released this video telling americans she will be hitting the road to earn their votes. let's go straight to chief white house correspondent ed henry live in de mine iowa where mrs. clinton is expected to visit early as this week. what did mr. clinton say about her reasons for running in thatv video. >> this is the worst kept secret that it was coming. we were it wag for what minute it would be. past 3:00 p.m. eastern time. it started with his tormer chairman he put out an e-mail saying she was in. after it came out on her website, hillary clinton.com, she also sent out a twiteet. instead of her saying she wanted to start a conversation with voters she led with voters talking about their own stories. after about a minute of their stories she said this. >> i'm running for president. americans have fought their way back from tough economic times. but the deck is still stacked in favor of those at the top. everyday americans need a champ

i'm arthel neville. welcome to america's news headquarters. >> i'm eric shawn of course happy easter and passover. top in the news think hour criticism over differences now in what both sides agreed to in the nuclear deals with iran. and major allies in the u.s. voicing skeptdcism as the obama administration is standing fast. >>> thousands of faithful braving the elements in st. peter's square as pope francis delivers easter mass. the message, giving spiritual comfort to christians around the world. >>> and indicate yas in kentucky. those riots erupting after the wild cats shocking there is wisconsin in the final four ending their bid for a perfect season. >>> first, we begin this new hour with the debate consuming the nation's capitol. the framework nuclear deal with iran. president obama is selling it hard calling the interim agreement a good deal. he is warning congress not tamper with it. some law make remembers casting a doubtful eye on what has been agreed to demanding their right to take a much cl

. >> and i'm arthel neville. >> a pipeline goes up in flames. take a look at this. that set it off. >> and one state could be on the verge of allowing concealed guns out in the open. we're going to debate the latest on gun rights. >> but