from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good eveningthnd k you for joining us. u.s. investigators will head to the scene of a plane crash in t ethiopt killed all 157 teople on board this morning. search and rescus found no survivors at the scene of the crash, 40 miles south of ethiopia's capital of addis ababa. the ethiopian airlines plane was a four-month-old boeing 737 maxs eight, the nmodel of the popular commercial airliner. and the same model as anio indonesianair flight that crashed in october. kenya's transport ministerhe confirmed thatargest number of passengers were from kenya, where the plane was headed.th amon157 people on board, there were numerous nationalities including eight americans and 18 canadians. >> there were at least 35 nationalities and regrettably kenya is the highest with 32 passengers onboard. >> senivasan: the airline's c.e.o. tewolde gebremariam visited the site of the cras ethiopian airlines reported the senior pilot onboard had more than 8,000 flight hours. the crash investigation will include representatives

from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. the united sta cutting off direct aid to el salvador, guatemala, and honduras. the state department announced today that it will suspend 2017 and 2018 payments to the three countries. ve comes one day after president trump threatened to mmut down the u.s.-mexico border overration and said that the cuts were already in place. >> i've enents to guatemala, to honduras and el salvador. ymore.ey goes there an we were giving them $500 million. e giving them tremendous aid. we stopped payment to honduras, to guatemad to el salvador. we were paying them tremendous amounts of money, and we're not pahem any more because they haven't done a thing for us. >> sreenivasan: democratic members of congress who were visiting el salvador today odlled the aid cut off "entirely counter-tive." we'll have another story from honduras coming up. palestinian health officials said today that at least three people were killed and more than 60 injured during protests at the border betw

from t tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening, and thanks for joining us. the coents are still secret, the attorney general is still iaviewing, and the demands to see spcounsel robert mueller's report on the almost two-year investigation into president trump and russian election interference are growing. photographers tracked the movements of attorney general william barr as he left home this morning. yesterday, in a letter to congreional leaders, barr said he anticipated he might be "in a position to advise you of the special counsel's principal lusions as soon as this weekend." president trump remained at his mar-a-lago estate in florida, where he played golf. democrats and republicans held conference calls to consider strategies. house speaker nancy pelosi issued a statement to her democratic colleagues in advance of their call, asking that any briefings about the mueller report be "unclassified so that members can speak freely about every aspect of the report." for analysis and a look at what may be coming next, we turn to ry

from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening and thank you for joining us. a class action lawsuit challenging the trump administration's zero tolerance policy just got bigge it was the policy which separated more than 2,700 migrant children from their families at the u.s.-mexico border last spring. the federal judge overseeing the case said the government must add what may be thousands more children and families to the case. in a ruling late yesterday, judge dana sabted a ly-released report from the office of the inspector ral at health and human services. it found federal agencies began separating families as early as july 201 ten months before the zero tolerance policy was publicly annou18ed in may of sabraw said he would hear arguments later this month on whether the government will need to track dn these additional families, but said that while it "may be burdensome, it clearly can be done." the full ruling is on our website and we'll ve more on the money being made on migrant smuggling at the border coming up after our news

from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreenivasan: good evening,oi and thanks forng us. new zealand is in mourning after the deadliest terror attack in the country's history. at least 49 people were shot ana killtwo mosques in new zealand's third-largest city of christchurch during friday prayer services. hundreds of mourners paid their respects at the site of the first shooting, the al noor mosque. others laid flowers at a msmorial site near the hospital where many victire being treated for injuries. several are still in critical erndition. today, family meidentified some of the victims, including a three-year-old child and a 71- year-old man. memorials were also held around the world. in pakistan, people gathered for a vigil, and the foreign minister confirmed that six pakistanis were among the dead, includina father and son. the suspect in the terror attack appeared in court saturday morning, where he was charged with murder and ordered to return april 5. the judge ordered the man's face blurred in video released to the media. before he launche

i'm hari sreenivasan. we're bringing you tonight's broadcast from the lamont- doherty earth observatory overloing the hudson river north of new york city. the observatory is part of columbia university's earth institute, where researchers and students work on complicated environmental issues facing the planet. we'll hear more about the research being done here and how it is helping advance our nding of climate change. but first, here are today's headlines. new zealanime minister jacinda ardern consoled community members at a mosque and paid respects to the victims of friday's terrorist attack on two mosques in christchurch. the prime minister said authorities will begin releasing the bodies of victims to their families this evening. ne yesterday that the death toll is now 50 with the discovery of another bodmoin one of the ues. as of this morning, dozens of wounded are still in the hospital. facebook, where the gunman's live-streamed video st the attack fppeared, responded to criticism last night, tweeting

there hasn't been a treatment breakthrough for 40 ars, but as hari sreenivasan reports, the tide may be starting to turn. >> sreenivasan: dalene von delft was leading a happy life. the young south africanys phian was married to a classmate from medical school, and well on her way to being a pediatric surgeon, when she got what felt like a bad cold, including a cough that wouldn't go away. >> i think i just decided, i must go for an x-ray. i can remember walki into the dark room and just seeing my x-ray and i got such a fright. i could see the whole left top part of my lung. there was a hole, and it was just destroyed. i couldn't believe it's my x-ray, because it looked bad. >> sreivasan: it was tuberculosis, or t.b.: a b contagioterial infection that most commonly attacks the lungs. it spreads from peon to person through the air, through coughing or speaking. for dalene, the news was even worse. >> i was at home and this email came through, unfortunately, with the news that i got multidrug-resistant t.b. >> sreenivasan: for zolelwaar sifumba, it std with a swollen lymph node when she

for the pbs newshour, i'm hari sreenivasan. >> woodruff: it has been another painful week for the community at marjorytoneman douglas high school in parkland, florida. there have been two apparent suicides within a week. one was a sophomore who has not been identified. the other was 19-year-old sydney aiello, who was a senior last year when a mass shooting took the lives of 17 of her fellow students.dn 's mother said her daughter was friends with one os the studho died that day, struggled with survivor's guilt, and was diagtrsed with post matic stress disorder. g e school district and the community are work provide more treatment, counseling and treach for anyone in nee and it has raised once again questis about what can be done to help young people cope. that is the focus of our education segmt this week, w wiliam brangham. a warning: we will be discussing a very disturbing subject with explicit questions. >> brangham: the news from parkland this week has clearly shaken many in the florida community-- and elsewhere-- and it's led to even greater efforts to help those who are struggling. we

from the tisch wnet studios at lincoln center in new york, hari sreenivasan. >> sreivasan: good evening and thank you for joining us. u.s. and south korean officials announced an end to longtime joint military drills on the korean peninsula. the announcement came late yesterday, just two days after presidt trump's summit with north korean leader kim jong un ended without any agreement. in a statement, the pentagon said that current springtime drills would be replaced with" newly designed command post ercises and revised field training programs." the purpose of the annual exercises was to prepare the countries for a possible tinvasion of south korea north. north korea considers the joint exercises a sign of aggression. on thursday, while in vietnam, president ump called the operations, "a very, very expensive thing". that's also when the president said that he took chairman kim"" at his wor regarding the death of american student, otto ncrmbier. warmbier was sen to 15 years imprisonment for stealing a propaganda poster. according to president, kim told him that he was unaware of the trea

i'm hari sreenivasan. thanks for watching. have a goonight. captioning sponsored by wnet captioned by media access group at wgbh access.wgbh.org >> pbs newshour weekend is made possible by: bernard and irene schwartz. sue and edgar wachenheim iii. seton melvin. the cheryl and philip milstein family. dr. p. roy vagelos and diana t. vagelos. the j.p.b. foundation. rosalind p. walter. barbara hope zuckerberg. corporate funding is provided by mutual of america-- designing customized individual and group retirement products. that's why we're your retirement company. additional support has been provided by: and by the corporation for public broadcasting, and by contributions to your pbs yostation from viewers lik thank you. be more. be more. pbs. ...and by the foowing. anne: "we have so little faith in the ebb and flow of life, of love, of relationshipsea weat the flow of the tide and resist in terror its ebb. we are afraid it will never return. how can one learn to live through the ebb tides of one existence? how can one learn to take the trough of

hilaughs ) not that i checkedmorning. >> sreenivasan: in maine, for the pbs newshour, i'm. harienivas uf >> woo hopefully, picking up new hobbies is a life-long habit. o as we ag new pursuits tend to be things that keep us tethered to the ground. we learn a new language, or become proficient at a ge we never played before. but what happens when all you want to do, is something that puts your life in danger? tonight, novelist jane uamilton brinher "humble opinion" on just how to weigh that decision. n >> 50s, i fell in love. i couldn't believe it at first. love without the usual lunacy, sleepless nights, sudden weight loss, no sending reckless notes. beloved, a track el fa ke any new love, however, there were soon problems beyond there was a standard fundamental question, is this relationship going to kill me? every time i get on the track, i wonder if i'm going to die at the hands me idiot on the road, and i include myself in that category. i've made some stupendously unconsideredoves and, more than once, tipped over at a standstill. questi number two, a math problem -- how much

futurist amy webb talks about this with our hari sreenivasan.