We decided that we really needed to celebrate america and not let this incident destroy us but help us come together. We wanted to choose love over hate and courage over fear. Ifill endangered waterways, a new report finds development threatens the Colorado River and the ecosystem of the grand canyon. A grand challenge to build a better suit for Health Workers fighting ebola. How can a group of novices address a problem and come up with solutions that are better than what the establishment has come up with . We decided to just give it a try. Ifill those are some of the stories were covering on tonights pbs newshour. Major funding for the pbs newshour has been provided by lincoln financial committed to helping you take charge of your life and become youre own chief life officer. And with the ongoing support of these institutions and. This program was made possible by the corporation for public broadcasting. And by contributions to your pbs station from viewers like you. Thank you. Ifill jurors in the Boston Marathon bombing trial spent their first day deliberating today without reaching a verdict. Dzokhar tsarnaev is accused in the 2013 attack that killed 3 people and wounded 264. Hes also charged with killing a policeman. The defense admits his guilt, and has focused, instead, on trying to save him from the death penalty. Theres word the government tracked calls from the United States to nations linked to Drug Trafficking for more than 20 years. U. S. A today reports the effort was ultimately discontinued, but it served as a model for even more extensive surveillance after 9 11. The account says Drug Enforcement officials recorded call numbers and patterns, but not the content of the calls. Republican senator rand paul has formally launched his 2016 president ial campaign. The Tea Party Favorite announced in his home state of kentucky, with a libertarian message that blasted washington and government surveillance. He told supporters in louisville that he wants a return to liberty. Ive been fortunate. Ive been able to enjoy the american dream. I worry though that the opportunity and hope are slipping away for our sons and daughters. As i watch our oncegreat economy collapse under mounting spending and debt, i think, what kind of america will our grandchildren see . It seems to me that both parties and the entire political system are to blame. Ifill the firstterm senators father, ron paul, has run for president several times, without success. The c. I. A. s former station chief in pakistan, and its one time general counsel, will Face Criminal Charges over a u. S. Drone attack. A pakistani judge ordered the charges filed today. Theyre related to a strike that killed two people in the North Waziristan tribal region in 2009. In iraq, forensic teams have begun exhuming bodies from mass graves found in tikrit. The remains are believed to be soldiers massacred by Islamic State fighters last june. The city was recaptured last week. Relatives of the victims, along with shiite militiamen, paid respects at one of the grave sites today. They offered prayers and lit candles for the dead. The Iran Nuclear Agreement gained a key endorsement today, from the countrys powerful revolutionary guard. The guards commanding general said negotiators succeeded in defending the rights of the iranian nation, and the iranian nation and the guard appreciate their honest political efforts. Separately, president obama told n. P. R. That iran would remain a year away from building a bomb, for at least a decade. What is a more relevant fear would be that in year 13, 14, 15 they have advanced centrifuges that enrich uranium fairly rapidly, and at that point, the breakout times would have shrunk almost down to zero. Keep in mind, though, currently, the breakout times are only about two to three months by our intelligence estimates. Ifill House Speaker john boehner shot back, saying the president has now confirmed what critics of the deal have been saying. This was election day in chicago, with the Mayors Office on the line. Incumbent rahm emanuel was heavily favored to win a second term in a runoff against jesus chuy garcia, a cook county commissioner. And three City Council Seats were at stake in ferguson, missouri, in the citys first election since last years shooting of a black teenager by a white policeman. The council could go from five whites and one black member to a 5050 split. The National Transportion Safety Board is calling for urgent safety improvements for trains hauling crude oil. The Agency Issued four recommendations today after a series of derailments and fires. They include installing ceramic thermal blankets and other systems on oil cars to withstand fire, and sharply reducing the speed of oil trains. Wall street had a quiet day, with all of the major indexes drifting slightly lower. The Dow Jones Industrial average lost five points to close at 17875. The nasdaq fell seven points and the sandp 500 slipped four. And duke celebrated today after its return to the pinnacle of mens college basketball. The blue devils topped wisconsin last night, in a 6863 comeback victory. Its the fifth title for duke head coach Mike Krzyzewski the womens championship game is tonight, between connecticut and notre dame. Ifill still to come on the newshour Palestinian Refugees in syria trapped by Islamic State advances; an inside look at the fight for yemen; how an Elementary School moves on after a shooting; threats to the Colorado River and what it means for the grand canyon; creating technology to help Small Farmers around the world; twitter, facebook, instagram and the price of constant connection; a grand challenge to build a better ebola suit; plus, pushing for motorcycle helmets to save lives in cambodia. Ifill the United Nations is demanding immediate access to a Palestinian Refugee camp in syria thats come under Islamic State control. About 18,000 civilians at the yarmouk refugee camp near damascus are caught in the crossfire. One u. N. Official described the scene there as beyond inhumane. Paul davies of independent Television News narrates our report. Reporter syrias civil war has reduced many communities to rubble. Yarmouk on the outskirts of damascus is particularly tragic. For the civilians caught in the crossfire are not even syrian. They are Palestinian Refugees who came here to escape their own conflicts only to find themselves in the middle of someone elses, and at what a price. Yarmouk, officially a refugee camp, became a battleground because fighters from groups aligned to Islamic State moved in and used it as their base. The syrian army responded bombarding the area, effectively placing yarmouk and all those who have taken shelter there under siege. The u. N. Has become increasingly concerned about a developing humanitarian crisis. Last year, a u. N. Photographer captured this remarkable picture of a civilian population trapped in a warzone. Its estimated 18,000 palestinian men, women and children remain in yarmouk. Today the Security Council said it was time for intervention. The members called for the protection of civilians in the camp for ensuring humanitarian access to the area including by providing lifesaving assistance. Reporter but getting help to trapped civilians is not possible while Islamic State and other groups are locked in war with president assads military. Humanitarian groups are calling on all powers that have influence over the men with guns to use it to organize a cease fire that would allow an evacuation of noncombatants. Ifill in Saudia Arabia today, deputy secretary of state Anthony Blinken announced the u. S. Will accelerate delivery of arms and intelligence, to boost the saudis 13dayold Bombing Campaign against Houthi Rebels in neighboring yemen. Yemens slide towards humanitarian disaster has seen airports and sea trade cut off, and a government coup. Irans supreme leader, who is said to back the houthis, said today foreign interference must stop. Journalist Safa Al Ahmad gets a rare inside look inside an unstable nation, and into the lives and aspirations of houthi fighters in tonights frontline documentary, the fight for yemen. Al ahmad for the moment, the saudi border may be the limit of houthi control. But their ambitions go way beyond it. Our borders are tehran and the islamic and arab world. We will help oppressed people all over the world. This barbwire here Means Nothing to you . translated it Means Nothing. It represents nothing. If the relationship between the yemeni and Saudi Arabian people is strengthened, then it will ease the fall of the house of alsaad. Yes, it will be a painful surgical procedure but in the end there will be healing from the sickness. Reporter the saudis see them as a stress and accuse the haugabooks of collusion with their regional archrival, iran. It has been widely reported that iran gives the group weapon, money and training. translated this is not true. These accusations have been made for a long time. translated no financial, military or moral support . translated no financial or military. If there is moral support, we support chavez in venezuela. Why this insistence that we receive support from iran . Other than wanting to turn the struggle in this country and the region into a sectarian one, based on the american and zionist agenda. Al ahmad but the struggle against the houthis inside yemen is fierce. For years, powerful yemeni tribes received money from saudi arabia. Now the saudis back the sunni tribes opposed to the houthis with cash and arms. And then there is al qaeda. Ifill i spoke to journalist Safa Al Ahmad a short time ago. Thank you for joining us. You spent some time on the border, as we just saw, going places most people dont get to go in yemen and talking to people most people dont get to talk. To what is the attitude on the ground . What is the sense of this irrevocable slide were seeing in yemen . Yeah, when i was there i could see the beginning of that schism within the Yemeni Society between those who are pro and antihouthis. Theyre suffering through a lot of corrupt political. A lot of people followed the houthis thinking there would be an honest government but that wasnt true. The victims, the houthis, for over a decade now have been the victimizer. Ifill you were there before the saudis started their air strikes that began 13 days ago. Tell us about what the houthis, how they came to be where they came to be now, as you describe . In the beginning it was an ideology. Houthi was the founder of the movement. This is where the movement came from. He started off as a revivalist which is a very specific sect that falls under the umbrella of the General Group but there are very different beliefs than iranian shia. And he had very strong antiempirist ideas, as well. He was quite affected by september 11th and he saw the wars on iraq and the war on afghanistan as a pretext by the americans and the west to occupy muslim land. And so beginning with that the former president of yemen was really worried about that ideology. He waged six wars against the houthis. Hes the one who effectively transformed them from an ideology, from just a group of people having religious discussions in the mountains in the north of yemen into a fully fledged rebel movement. And one of the things that came out of that is they no longer wanted to be marginalized. They want to be at the table of power. This is how they took control from in large part the women. Ifill you describe in your piece that there was. Then there came al qaeda. Is there a connection and a comparison that can be made, especially in ideology, between the houthis and al qaeda . Yell i mean, the ironic factor that is between the houthis and al qaeda, they both have very strong antiamerican sentiment. The slow gone of the houthis is death to america and death to israel and good curse the jews and victory to islam. Besides that there are very little in common between al qaeda and the houthis as far as ideology goes but they do see themselves as having a common enemy, which is america. So america is in an interesting situation, where the houthis are fighting al qaeda quite viciously on the ground, yet now the americans are allied with saudi arabia in strikes against the houthis. It shows you how complex yemen is and the whole region. Ifill what is irans role here . I dont know. It depends how much you buy into the iranians are fully backing the houthis. I think what is happening is that houthis and the iranians have common interests, but theres very little Good Journalism thats been done to uncover the truex true extent of that relationship between the houthis and iran. I think they benefit of the rhetoric from the houthis on the ground, but also they do have a connection. But not to the extent that is being covered in the media at the moment by describing them as shia militias backed by iran. I think thats an overstatement. Ifill Safa Al Ahmad, your documentary tonight the fight for yemen airs tonight on most pbs stations on frontline. Thank you for joining us. Thank you. Ifill now, a unique look at School Safety issues, through the eyes of young people. Today were launching a new feature from our network of student reporting labs, middle and High School Journalism programs around the country. It explores how the concept of safety has been redefined since the sandy hook tragedy two years ago. Our first report comes from Student TelevisionNetwork Correspondent sydney payne at Carlsbad High School in california. As part of our series on whats changed, she and her team visited a local san diego Elementary School that was the scene of a terrifying shooting in 2010. Were calling the series the new safe. Reporter friday october 8 2010, began as any other day begins at this suburban san diego Elementary School. It was lunchtime and the students were heading out on to the playground. At about the same time 41 yearold Brendan Orourke pulled up to a curb outside the school. He was armed with a. 357 magnum revoferler a red gasoline can and a propane tank. It was a typical friday. Everyone was wearing their spirit ware. It was very relaxed. We heard a gunshot. We heard over the walkie talkie the custodian was yelling that somebody was shooting at the children. There was a loud bang and everybody thought it was like a big firework. So everybody is looking up, like up over there because thats where he was. Everybody just looks up at everything, and nobody knows whats going on. And then a few people start screaming and everybody starts screaming. Its lunchtime and carson and his friends are out on the playground. The loud ping that he hears is actually the sound of a bull fret a. 357 magnum handgun hitting this metal pole only about ten feet away from where car isnt and his friends were playing. A man who looks like hes wearing all black with black everything, a beanie and shirt and long sleeves. And hes just running with a gun. He ends up shooting a couple rounds and ends up getting confronted by a school aide. At that point he raises the gun points it at the chest and pulls the trigger. He ran out of ammunition. Reporter before running out of bullet, the gunman randomly shot six rounds into an open playground of children, two girl, ages six and seven were caught in the gunfire. His statements were, shoot them, burn them, blow them up. I dont think it was take a couple shots and leave. Reporter alarmed by the students screams, three construction workers who were working on the roof of the school noticed Brendan Orourke as he climbed back over the fence. Orourke had run out of ammunition and he was heading become to his car to reload. The men were able to wrestle him to the ground after one of the workers hit the shooter with his truck. Nobody at kelly Elementary School ever expected Something Like this to happen here. My life wont be the same. No. I mean, i worry when i send my kid to school, you know, that something could happen. It wont be the same. Our bubble was broken that day. I think when somebody tries to hurt kids that badly and we love these kids so much and you think that somebody tried to do that to them its emotional. That hurts that that happens to them. Im also very proud of them because kids are super resilient. Peggy parish teaches kindergarten. As the school went into immediate lockdown parish ushered 15 students and three classroom help inteers a bathroom. They would stay there for the first 45 minutes of the merely fourhour lockdown. About 45 minutes we were all in this one bathroom and then we had some go into the other bathroom after about 45 minutes. At the beginning we were all just up against the wall, and as time went along and as i was reading, i had to sit there on the floor. It