i'm hari sreenivasan. we begin in greece, where the results of a nationwide vote tomorrow could keep the debt- ridden economy afloat or cut off desperately-needed financial support from its european creditors. voters from both camps have been holding massive rallies. if greeks vote "no" to adopting a set of severe austerity measures, the country would lose any chance of getting financial help. if greeks vote "yes" to the cuts, the country could get some debt relief. the referendum comes after greece failed to pay a 1.6 billion euro debt payment, shuttered its banks and started rationing cash. today, greece's finance minister accused creditors of trying to" terrorize" citizens by" instilling fear in people" so they'll approve the tough austerity measures. earlier, i spoke with newshour special correspondent malcolm brabant about the mood of the people on the eve of this historic vote. you've been reporting on this for the past several weeks for us and other places. you've been talking to people on the stree

i'm hari sreenivasan. we start with greece, where officials are projecting that more than 60% of voters have rejected austerity measures proposed by creditors. crowds are rallying in the streets, celebrating the early returns. the "no" vote means greeks do not want to make the deep budget cuts in order to get emergency bailout money as the nation falls deeper into debt. greek prime minister alexis tsipras said that quote the mandate asking call for a break request europe but rather gives me greater negotiating strength. joins us from athens first of all the reaction on the streets i can almost pbs newshour special correspondent malcolm brabant joins us now from athens. hear them behind you in the constitution square. >> there is euphoria often the streets of athens tonight because this result is entirety consistent with the greeks natural tendency towards resistance. this is something that appeals to their national character. at this stage people really thought they had nothing more to lose. they have endu

from the tisch wnet studios in lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. we start where we have for what seems the past two weeks now, closer and closer to a historic deal between iran and several nations about limiting their nuclear program in exchange for a lifting of economic sanctions- - at one point today, word that a deal could be on the table as early as tomorrow. here was an optimistic secretary of state kerry this morning. >> a very good meeting. very positive. i think we are getting to some real decisions. so, i will say, because we have a few tough things to do, i remain hopeful. >> sreenivasan: but later in the day, iranian foreign minister javad zarif stood on his balcony and told press there was more work to be done tomorrow, and that a deal would not be finished today. the agreement would be a culmination of more than a decade of talks to allow u.n. weapons inspections. even if a deal is reached, the governments of britain, france, germany, russia and china and the u.s. have to approve. that could be a problem acco

i'm hari sreenivasan.tioning sponsored by wnet captioned by media access group at wgbh access.wgbh.org >> pbs newshour weekend is made possible by: corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support is provided by: and by the corporation for public broadcasting and by contributions to your pbs station from viewers like you. thank you. female announcer: truly california is a kqed production presented in association with... [grinding surf music] ♪ ♪ female narrator: next, on truly california: it wasn't a competitive sports camp. - where else, truly, in my life would i have been able to learn to do gymnastic poses on a 6-foot trotting horse named bozo? narrator: it wasn't a fancy computer camp. - the maintenance guys always used to joke that the camp was held together with duct tape and that wasn't far from the truth. narrator: it was a regular old kids' camp that forever

from the tisch wnet studios in lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. the family of muhammad youssef abdulazeez says there are no words to describe the "shock, horror, and grief" it feels that the 24-year gunned down and killed five u.s. military serviceman in chattanooga, tennessee. in a statement, they say:" the person who committed this horrible crime was not the son we knew and loved. for many years, our son suffered from depression. it grieves us beyond belief to know that his pain found its expression in this heinous act of violence." abdulazeez's family says it is cooperating with investigators and offers condolences to the families of four marines and one sailor killed in thursday's attack, saying: "...we are truly sorry for their loss." police killed abdulazeez in a shootout. but none of his victims had been armed, despite being members of the military at a reserve center. now, the governors of six states-- florida, louisiana, arkansas, oklahoma, texas, and indiana-- are ordering their national guard members to arm th

from the tisch wnet studios in lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thanks for joining us. we're following three serious, but separate economic crises tonight. we start in greece, where parliament held a late night session to put together a series of budget cuts in the aims of convincing european leaders for 53.5 billion euros in bailout funds. prime minister alexis tsipras needs to persuade eurozone finance ministers meeting in brussels today that his austerity plan is worthy of further consideration by european leaders tomorrow. tsipras is promising budget cuts and tax hikes in exchange for a three-year loan to keep greece's banks from collapsing and keep the euro as its common currency. late today, the german finance minister suggested greece be taken off the euro for five years and get humanitarian aid instead of debt relief. one negotiator called today's meeting difficult. >> we are not there yet, both on substance. there is still a lot of criticism on the proposals, on the reform side, on the fiscal side and there is of course a major issue

hari sreenivasan has our report. t of our breakthroughs series on invention and innovation. >> sreenivasan: have you ever watched a bee fly? really watched them closely? or studied a butterfly or dragonfly darting around your garden? with the naked eye, its often hard to see how they are flying. with tiny wings that can flap hundreds, and sometimes thousands, of times a minute. but when you watch in slow motion with the help of a high- speed camera, you get a whole new perspective on the mysterious, and incredibly complex world, of insect flight. so how does a bee with such a giant body and such tiny wings actually fly? >> it beats its wings really fast and you can't even see that. >> sreenivasan: tom daniel is a biology professor at the university of washington, who has long studied bees, and all sorts of flying insects. he says there's a lot scientists have learned about bees over hundreds of years of study, but there is much more to learn about how exactly they fly. >> the sensory information coming off the wings i

i'm hari sreenivasan. possible by: corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we are your retirement company. additional support is provided by: and by the corporation for public broadcasting and by contributions to your pbs station from viewers like you. thank you. woman narrator: audrey hepburn... one of the most stylish women the world has ever seen. won't you join me? the epitome of elegance, she brought a natural effortless beauty to hollywood. someone with audrey's looks and audrey's particular personal brand of charm, was quite extraordinary. how do i look? but behind the glamour was a life marked by tragedy and loss. as a girl, audrey had lived through the horrors of the nazi occupation of holland surviving famine and malnutrition. the experience crushed her dream of becoming a dancer. this, along with her lifelong search for love as an adult, and her yearning against the odds to be a mother, would give her a profou

from the tisch wnet studios in lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. the mass shooting in chattanooga, tennessee, has claimed the life of a fifth victim. randall smith, a 26-year-old navy petty officer, died this morning, two days after being shot at a fenced-in navy and marine reserve center. smith was married with three éu four unarmed marines died thursday at the reserve center when gunman muhammad youssef abdulazeez opened fire with multiple weapons. police killed the 24-year-old abdulazeez at the scene. abdulazeez was a naturalized american citizen from kuwait who grew up in tennessee. he spent seven months in jordan last year. reuters is reporting a friend of abdulazeez says the gunman returned from jordan "concerned" over the situation in the middle east and that shortly before the attack, abdulazeez texted him an islamic verse: "whosoever shows enmity to a friend of mine, then i have declared war against him." investigators have not offered any evidence that abdulazeez might be connected to any islamic extremist grou

as hari sreenivasan explains telemedicine is beginning to transform the way we experience the medicalm. it's the latest in our "breakthroughs" series on invention and innovation. >> sreenivasan: a simple ritual like gardening on a hot summer day, is something tom & trisha uhrhammer don't take for granted anymore. >> can you use some basil? >> sreenivasan: just a year ago, tom had a massive stroke. >> i was sitting right next door here in this room watching tv, it was time to go to bed, so i got up and walked up the stairs and i didn't make it. i collapsed short of the bed. >> sreenivasan: the paramedics took tom, who was paralyzed on his left side, to nearby mercy general hospital in sacramento. with blood seeping into his skull, creating enormous pressure on his brain, time was of the essence. that's when a "telestroke" robot was deployed to the e.r. >> pretty soon this machine came toward me, and in the screen appeared a doctor. he said, "good evening. my name is dr. nee, i'm a neurologist and i'm here to examine your husband." and lo and behold that robot turned around, went around

hari sreenivasan has our story. that used to be the case for undersea volcano known as axiosea mount. two months ago when it started spewing lava these scientists knew instantly. >> this is all feeding information back. >> sreenivasan: you had 25 sensors sitting on the lip of a volcano and it's all feeding information back here. >> that's right. it's really exciting. >> sreenivasan: university of washington oceanographer john delaney is the director of a groundbreaking research project called the cabled array, also known as the cabled observatory, that has, in effect, turned axial seamount into the world's first wired volcano. >> there's the fish. look at that! >> we're standing in our control room that allows folks that are here on campus at the university of washington to actually interact with the instruments that might be as much as 400 kilometers, 300 miles offshore. >> sreenivasan: on the day of the eruption, a network of sensors on the volcano started measuring more than 8,000 small earthquakes, and the seafl

he talked recently with hari sreenivasan in our new york studios. >> tony morrison who knows somethingature says this is required reading. "in america, it is tradition toll destroy the black body. it is heritage. what does that mean? >> that's a statement of history. the african-american presence in this country begins roughly by the time this country's deep history began, 1619. after that, we had 250 years of enslavement. after that, we had 100 years of jim crow. jim crow was enforced through violence, through destruction of black bodies, lynching mass murder and terrorism up until this very day. we're in this era now where we have police forces, you know who are in our communities and we, you know, seems like every week get a shooting or somebody beaten up or somebody as with sandra bland, somebody who dies under mysterious circumstances and we accept this in a normal way of doing business. we think that it is okay to have the world's largest prison population, and we think it's okay that one particular ethnic group is more in that population, prisons are violent incarceration is vio

hari sreenivasan now talks with a lawmaker who's been pushing for the investigation. >> sreenivasan: last month senator richard blumenthal called on the justice department to look into these issues. and he joins me now from hartford. senator, what made you want to ask the d.o.j. to investigate? >> what made me ask for this investigation is the evidence, and it's the same evidence that caused the department of justice to make the decision to investigate. by the way, the department of justice doesn't decide on anti-trust investigations out of curiosity or whim. there has to be some factual indication. and here it was pricing pattern, warnings to potential competitors like southwest airlines that it had to continue keeping capacity or numbers of flights down and the fact that there have been increasing prices for consumers as well as reduced numbers of seats on certain routes. >> so you're not trying to specifically constrain what a company should profit from or what would the percentage at the end of the year should be. your target is specifically communication between executives right

now a potentially exciting development in the search for an ebola vaccine-- and to hari sreenivasan.nivasan: results of a clinical trial conducted in the west african country of guinea and published today in the medical journal "lancet" found an experimental vaccine was 75%- to-100% effective in blocking new infections of the ebola virus. the trial involved more than 7,000 people, over 3,500 of whom were vaccinated. guinea is one of three west african countries that marked the epicenter of the 2014 ebola outbreak that killed more than 10,000 people. for more on efforts to create a vaccine and on this trial, i am joined by dr. anthony fauci, director of the national institute of allergy and infectious disease at the national institutes of health. so there are several different companies and people working on venus including a member of your team burks today we hear word like "game changer," you know, these are significant results. why was this so important? >> well it's significant because of the outcome of the trial. it showed rather impressive results. now, it was done under very di

hari sreenivasan has the story from our new york studios. >> it's not fun to have your two ton s.u.v.s hacked just as you're parking in front of a ditch. >> sreenivasan: writer andy greenberg found that out the hard way. for a story on wired.com, he decided to be a willing victim of "car-hacking" by two researchers-- charlie miller and chris valasek. the two-and-a-half ton guinea pig: a 2014 jeep cherokee, that greenberg drove on a st. louis highway. >> remember, andy, no matter what happens, don't panic. >> sreenivasan: that easier said than done: without warning, and from miles away, they blasted the air vents, and started blaring the music. >> i can't turn it down! >> sreenivasan: after turning on the windshield wipers and wiper fluid, they killed the engine, forcing him to bring the car to a halt on the highway, as cars and semis sped by. >> i'm going to pull over because i have p.t.s.d. >> sreenivasan: the hack is possible through an internet- connected system, called "u- connect", that controls the entertainment and navigation, and enables communication through phone calls and w

hari sreenivasan has that story. >> sreenivasan: thanks, judy.'s behind the increased state of readiness? for that we turn to daniel benjamin, former coordinator for counter terrorism at the state department during the first term of the obama administration. he's now a professor at dartmouth college and he joins us from new hampshire. we kind of get mixed signals here. the department of homeland security, fbi say to everyone be increasingly vigilant over this holiday weekend. yet they aren't saying there's a specific threat. >> that's correct. first they're not saying it to everyone, they're saying it to law enforcement. if you wanted to compare this to the old days, this wouldn't be actually a change color in the color coded scheme that we used to have. it's sort of an alert to authorities to be vigilant, to be cautious to make sure they are well staffed and look into people of interest in case they're tracking anyone. they do say they do not have any credible intelligence on particular plotting and in fact to date there's been no announce to an

hari sreenivasan has the details. >> sreenivasan: instead of federal rules for grading and punishing schools, the senate legislation would let states design their own accountability systems. but serious disagreements remain. the white house is calling for rules that tell states when to intervene in low-performing schools. and some republicans want federal funds for low-income students to follow them to the school of their choice. here to look at what this could mean for schools are rick hess director of education policy studies for the american enterprise institute. and bob wise, former governor of west virginia and president of the alliance for excellent education. rick, i want to start with you first. all schools were supposed to be at this place where kids were learning at grade level by last year. we didn't get there. how does this piece of legislation think it can fix that? >> understandturns out when you passed a law in 2001 that says 100% of children will be proficient in reading and math by 2014, the fact that congress would like it to be so doesn't make it. so i think that's