At the crash scene in the french alps, crews continued the difficult task of recovering remains of the 150 who died. We have a series of reports tonight. First well go to allen pizzey in the copilots hometown. Reporter investigators searching the apartment and family home of Andreas Lubitz turned up several doctors notes, including one excusing him from work on the day of the crash, but that one had been torn up. German prosecutor Christoph Gumpa said the note supports the Current Program assessment that he hid his illness from his colleaguees. Producers would not say what that medical condition was other than that it had been treated by a doctor. They also did not find a suicide note or anything indicating a religious or political motive. Now they are combing through the copilots background examining financial and personal details as well as the possibility that he was suffering suffering from depression. The federal Aviation Authority in germany said there was a medical condition attached to lubeits file but did not specify what it was. Today, Dusseldorf University clinic said lubitz had been a patient as recently as march 10. Officials declined to provide further details on the basis of patient confidentialityity. The medical records have been sent to the investigators office. Germanwings confirmed lukeitz interrupted his training for several months in 2009 but have not said why. On wednesday, lufthansa c. E. O. Carsten spohr said the copilot passed all the subsequent tests and checks with flying colors. German pilots undergo rigorous annual physicals but not specific psychological testing. Thats limited mostly to a questionnaire filled out by the pilots themselves. Europes Aviation Safety Agency is now recommending that airlines always have two people in the cockpit of a flying aircraft scott, and lufthansa has announced it will offer 55,000 assistance for each victim. Pelley allen pizzey reporting from the copilots home town tonight. Alan, thank you. Now to the search for the remains of those victims. Elizabeth palmer is on the scene. Reporter French Police mount of mountaineers helped forensic specialists comb the crash site today. Theyve now gathered hundreds of body parts for identification marked on the slope with red flags. Theyre also doing a careful grid search for pieces of the plane on a roughly 10acre site which, says Lieutenant Colonel xavier vialenc, has been divided up into sections. There was a big photograph taken of the site first so that it could be . Thats it. That is the way it works. Theres a share of the crash zone. Each investigator works on his part. Reporter the evidence being ferried off the mountain by helicopter may eventually help prove the plane was crashed on purpose. While in mobile police labs set up locally, technicians are working to identify the victims d. N. A. In the the village closest to the crash site, family members are still arriving to view the new memorial stone. Dr. Carlos urkia says the fact that it now looks like murder makes things much worse. So its a double shock. Its a kind of additional suffering. They dont understand. Reporter and not only the families of the victims. Robert oliver salvo lost his son, and today he expressed compassion for the family of the copilot, Andreas Lubitz. Dont feel anger. I feel im im really sad for the father the parents of that young pilot. I mean, i cant imagine what theyre going through right now. Reporter and, you know cot several local people have said the same thing. They have really sympathy for the anguish of lubitz parents who were told came to see the memorial but were kept apart from the other families. Pelley tragic for everyone. Elizabeth palmer near the scene of the crime for us tonight. Liz, thank you. Transportation correspondent jeff pegues has been looking into medical screening for pilots here in the united states. Reporter the nations Airline Pilots cannot do their jobs without first being cleared by doctors. Thatfuls undergoing a physical exam and selfreporting on this online form whether theyve tried to commit suicide or have mental disorders, including depression or anxiety. A formal psychiatric examination is not required by the federal aviation administration. Thomas daly is the dean of the Aviation Program at Dowling College in new york. We cant just go along now with the system the way it is and hope for the best. At this time, we have to go back now and say the psychological screening has to take place in more than one area at a time. Reporter daly says the system should be more like what the military requires. Its pilots undergo flight physicals every year rigorous background checks, and some branches even require Mental Health checks every month which include interviews with a commander, peers and medical doctors. Since 2010 the f. A. A. Has actually eased requirements as a way of encouraging pilots to report medical conditions. On a casebycase basis, commercial pilots who take antidepressant medications like zoloft and prozac are now allowed to fly if they have been factually treated on the medication for at least 12 months. Pilots warn against a rush to make changes. Scott, they say the rules currently in place go far enough and they say that flight crews are trained to spot pilots who may be going through Mental Health changes. Pelley jeff pegues reporting tonight. Thank you, jeff. Late today italy a highest court overturned the murder convictions of american amanda knox and her exboyfriend purpose they were accused of killing a fellow student in 2007. Convicted once, they were acquitted on appeal, then convicted a second time. Todays action closes this case for good. Knox, now 27, is in her home state of washington. Two people are still missing following a gas explosion in new york city yesterday. 24 hours later the ruins were still smoldering. Four buildings were damaged or destroyed. Nearly two dozen people were hurt. Officials say the explosion may have been causeed by a worker improperly tapping a gas line. This evening, there is a growing backlash against a law signed yesterday by the governor of indiana. Supporters of the law say it protects religious freedom. Opponents say it legalizes discrimination. Heres adriana diaz. This is really about limiting the authority of the government to intrude upon the religious freedom of every hoosier of every faith. Reporter governor mike pence signed the religious freedom bill that protects individuals and business from government interference when following their religious beliefs. But Holly Williamss believe its an invitation to discriminate by refusing service. We dont know what restaurants or what stores we can go into and not be turned away and have to suffer. Its degrading. Its embarrassing. Reporter the protests have grown from indiana state house to a torrent on social media. Apple c. E. O. Tim cook tweeted, apple is open for everyone. We are deeply disappointed in indianas new law. Ahead of the final four in indianapolis next week the n. C. A. A. Stated, we are especially concerned about how this legislation could affect our student athletes and employees. Indiana joins 19 other states with freedom of religion laws. A dozen more have intriesed splar bills. State senator scott schnider coauthored the bill. Those who oppose the bill say its legalizing discrimination. What do you say to that . I think its nonsense. And i think the fact that proves my point is this because its been on the books for so long, because its been law in numerous states since 97. Reporter hundreds of business in indiana are making public stands. Give has a sticker that says, this Business Service everyone on display. My job is to love and inspire everyone who comes through my door and not tell you who you need to be. Reporter Companies Like eli lilly, salesforce. Com and the Indiana Chamber of commerce have voiced concern over the law. Opponents of the law are planning a rally tomorrow at indiana state house where thousands are expected. Pelley adriana, thanks very much. Senate democratic leader harry reid announced today he will not run for a sixth term. Reid is stiff and hes still recovering from injuries after he fell while exercising. He lost the majority leadership position when the republicans took back the senate. Chuck schumer of new york is likely to succeed reid as the democratic leader. Overseas, yemen is becoming the main front in a battle between the two main factions of islam. Today, forces led by the sunni kingdom of saudi arabia accelerated their attack on shiite rebels who are backed by iran. More now from david martin. Reporter arab warplanes dropped hundreds of bombs on rebel targets in yemen in an air campaign that dwarfs the bombing of isis in iraq and syria. Thats because saudi arabia, the united arab emirates, and bahrain, athlete countries flying air strikes all view iran, which is backing the rebel effort to take over yemen as a greater threat than isis. A small team of american experts has been sent to saudi arabia to aid in the strikes by providing intelligence from spy satellites and reconnaissance drones. Saudi arabia is asking for more american support in the form of Aerial Refueling and spare parts. The rebels, known as houthis, have already taken the capital of saana and they are moving south to the border with some advance elements already fighting in the city. The objective of the bombing is to slow the rebel advance enough to give the Government Forces time to regroup. Saudi arabia has moved forces to the border with yemen and egypt has talked about sending troops as well. But u. S. Officials do not yet see preparations for a ground operation into yemen. Two saudi pilots had to bail out after their jet suffered a mechanical malfunction. They came down over water and two hours later, they were rescued by an american helicopter. Scott. Pelley david martin at the pentagon this evening. Thank you david. While the u. S. Is back sunni arabs in yemen in iraq it is fighting on the same side as shia militias who have been helping the iraqi army, which is trying to kick isis out of tikrit. Holly williams is following this. Reporter u. S. Led air strikes targeted isis fighting positions around tikrit, which was captured by the extremists in june. The strikes were requested by iraqs government after iraqi leaders earlier said they didnt need u. S. Help to win back the city. Instead, iraq turned to military advisers from iran to help its fighting force of more than 20,000 men many of them shiite muslim militiamen with iranian links. A condition of the u. S. Strikes is that the militias go home. Just outside tikrit two weeks ago, an iraqi general Bahaa Al Azawi confidently told us that victory was days away. But the tikrit offensive stalled, even though one senior iraqi politician told us isis may have only 20 fighters left in the city. There are very few. Theyre using snipers and boop trap buildings. Reporter Saad Al Muttalibi admits iraqs army is feeble despite 20 billion spent by the u. S. To train and equip it. I think the american money was very badly spent. Reporter by whom . By the iraqis or by the americans . By the americans. The americans produced for us a very weak, disorganized army, filled with corruption, an army that fell within the first battle. Reporter the u. S. Led air strikes may help win back tikrit, but, scott, this drawnout battle, despite iraqi forces vastly outnumbering isis militants, does not body well for iraqs fight for the rest of the country. Pelley Holly Williams reporting for us tonight in istanbul. Holly, thanks. Scientists have tapped into an ancient scourge for a new cancer treatment. And an astronaut begins a historic journey when the cbs evening news continues. [epic music] introducing aleve pm. The pm pain reliever. That dares to work all the way until. [birds chirping] the am. New aleve pm. Its the first to combine a safe sleep aid plus the 12 hour strength of aleve. For pain relief that can last all the way until morning. New aleve pm, for a better am. When eating healthy and Drinking Water just isnt enough to ease my constipation i trust dulcolax tablets. I take dulcolax for dependable overnight relief and in the morning i am back to myself dulcolax, designed for dependable relief it tastes better when you grow it. 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Looked at the nurse that was sitting there holding my hand, and i said, i dont understand. What did he just say . It was kind of hard for me to process. Reporter stephanie became the first of 22 patients to allow a modified polio virus to be dripped directly into her brain tumor. Researchers are finding that the polio starts the killing, but its the immune system awakened to the infection that wrecks the tumor. Patient likes stephanie usually have months to live. But this is her m. R. I. Last august. And theres no cancer in this picture at all. We dont see any cancer, active cancer cells in the tumor at all. Reporter dr. Henry friedman is Deputy Director of dukes brain tumor center. I wonder of all the trials and all of the theories and all of the treatments that you have hoped for all of these years, how does does this stack up . This, to me, is the most promising therapy i have seen in my career period. Reporter dr. Matthias gromier created the virus, using genetic engineering to make cancer its only target. You have been testing this it therapy against a number of other cancers just in a laboratory. Yes. Reporter what have you been able to kill so far . So we have it done this for lung cancers breast cancers, colorectal cancers prostate cancers, pancreatic cancers liver cancers renal cancers. We probably see this in just about any type of cancer you can imagine. Pelley 11 patients in the study have died, though their lives were extended. The other 11 continue to improve. Our story killing cancer, will be seen this sunday on 60 minutes. And well be right back. Hey buddy, youre squashing me liquid wart remover . Could take weeks to treat. Embarrassing wart . Dr. Scholls freeze away wipes em out fast with as few as one treatment. Freeze away dr. Scholls. The 1 selling freeze brand. The garden is the story of our lives. Told and retold. Its as old as our time on earth. And as new as tomorrow. 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Switch your prescriptions to walgreens where you could save even more on Medicare Part d with copays as low as zero dollars. At the corner of happy and healthy. Space starts now. Reporter a russian spacecraft headed to the space station. American scott kelly and russian Mikhail Kornienko will spend almost a year there to test how humans react to long space missions. Scotts twin mark kelly, will do the same experiments on earth to provide a comparison. Today, the president of the university of oklahoma said the students who sang that racist chant learned it at a Fraternity Leadership conference. The fraternity was kicked off campus. Two memberes were expelled. More than 20 others face punishment, and every o. U. Student will receive diversity training now. Fiveyearold seth lane, born without an immune system, has to live in a bubble. Well, in a Youtube Video he asked people to wear yellow today to raise awareness of his condition, and did they ever. The pictures filled social media. Jeb bush craig ferguson, and Astin Kutcher were among seths new friends. The most amazing play in this basketball game was not on the court. Steve hartman on the road, is next. You know, just because your bladder is changing, it doesnt mean you have to. With tena, let yourself go. Be the one with the crazy laugh. And keep being their favorite playmate. With tenas unique super absorbent micro beads that lock in moisture and odor. Tena lets you be you. Ufferers. One tried the newest allergy spray which could take several days to feel the full effect of relief. The other took claritind which starts to work on allergies with nasal congestion in 30 minutes. The moral . Nothing works faster than claritind. Why are all these people so asleep yet im so awake . Did you know your brain has two systems . One helps keep you awake the other helps you sleep. 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Biotene, for people who suffer from a dry mouth. Introducing. A pm pain reliever that dares to work all the way until. The am. New aleve pm the only one to combine a safe sleep aid plus the 12 hour strength of aleve. One of the greatest sport plays weve seen in a while. It happened when the home team decided to even the Playing Field on a basketball court. Heres Steve Hartman on the road. Reporter if youre a fan of high school basketball, youre not alone. But if youre a fan of the gainesville tornadoes in gainesville, texas then you are. Alone. Usually our fan base was close to zero. Parents came to one game but they didnt come to the other ones because they didnt have time. Reporter the other students at gainesville dont come to the games either. Mostly because they cant get out. This is a juvenile correction facility for felony offenders and one of the few perks here for very Good Behavior is a chance to leave the prison a few times a year to play basketball. They play against private schools like Vanguard College prep in waco, and it was before that recent matchup that two vanguard players announced they werent going to play against a team with no fans. No one likes playing in an empty gym. Reporter but isnt that supposed to be a good thing for you . You dont have the other fans cheering against you . I guess, but it just seems weird. It just didnt seem right. Reporter so before their home game against gainesville, Hudson Bradley and Ben Martinson asked some of the vanguard fans for a favor. Gainesville tornadoes reporter to cheer for gainesville instead. cheers and applause the gainesville players had no idea what was happening. They walked on to the court to find their own signs of support their own cheerleaders. Even their own fan section. Half the crowd was assigned to cheer for gainesville. Then as it went on, everybody just kind of got so into it. Reporter nobody was cheering for you . Everybody was cheering for them. Every time they scored the gym was just lit up with cheering and clapping and everyone was on their feet. Reporter this is not what ive ever seen sports be. I think in a way, this is kind of how sports should be. It just kind of showed me the real impact that encouragement and support for anybody can make. Reporter hudson says we all need someone to believe in us. We all need someone who knows our mistakes and loves us anyway. And for, that the gainesville players cant thank those boys enough. Its something i wont forget. And im an old man, i will still be thinking about this. Probably going to remember this for the rest of my life. Reporter and finally, as for who won the game, well, obviously, they didnt care. So why should we . Steve hartman, on the road, in waco, texas. Pelley and thats the cbs evening news for tonight. For all of us at cbs news all around the world, im scott pelley. And ill see you sunday on 60 minutes. Good night. Captioning sponsored by cbs captioned by Media Access Group at wgbh access. Wgbh. Org [captioning funded by cbs sports division] [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. Visit ncicap. Org] you know what makes march madness so special . Theres hope for everybody. Its like a nonstop roller coaster ride. The utahs are headed to the sweet 16 everyone has a chance to step up and one game, one arena, to play the game of their lives. There are thousands of stories waiting to happen. And