Threecity tour of the United States in the cradle of american democracy, philadelphia. Today he delivered a speech from independence hall, the building where both the declaration of independence and the u. S. Constitution were signed. The holy father spoke from the same simple wooden lectern that president Abraham Lincoln used when he delivered the gettysburg address nearly 152 years ago. Pope francis addressed two issues that have been widely discussed by americans in recent months, religious liberty and immigration. Allen pizzey is traveling with the pope. Reporter at his request, pope francis took time out to be a tourist today, doing passes by the statue of liberty on his way the take the plane to philadelphia. The final two days of the popes visit are a celebration of families, the official reason for the trip dugged pilgrimage of mercy. Francis underlined that by getting out of his fiat to embrace tenyearold michael keating. By definition this stop is about meeting the people, not the politicians. The challenge for the security operation nonetheless. The first event here was masked with Church Officials and workers and everyone wanted contact. Bolstering the church in the u. S. City hardest hit by the sex abuse scandal is as integral a part of the visit as underscoring commitment to the traditional family in the catholic sense, meaning heterosexual. The traditional mass was a far cry from the one friday night in Madison Square garden. Hallelujah a voice that truly could be called heavenly hallelujah the message there was tailored for a metropolis. Francis called for compassion toward people who stand at the edges in deafening anonymity, foreigners, children without schooling, those deprived of medical insurance, the homeless, the forgotten elderly. He may be getting a bit weary today, but this pope never forgets his worldwide audience. Outside independence hall, which he described as the place where the freedoms that define this country were first proclaimed, francis made a plea for religious freedom. It was imperative, he said, that followers of the various religions join their voices in calling for peace, tolerance and respect for the dignity and rights of others. Tomorrow pope francis will visit a prison and is expected to meet with sex abuse victims, but that will be private. His last event, however, will be anything but that. The mass thats predicted to draw more than one million people. Jim . Axelrod allen pizzey covering the pope in philadelphia. Allen, thank you. By the way, at if tomorrows mass does draw more than a million people, that would make it the largest papal event in u. S. History, but not even close to the largest ever worldwide, that would be last january in the philippines where the pope drew somewhere between 6 and 7 million people. The world meeting of families, the catholic rally taking place this weekend in philadelphia, was the original reason for the popes visit to the United States. Heres jericka duncan. Reporter the 2015 world meeting of families lived up to its name. Where are you from . Illinois. How about you . Puerto rico. Puerto rico. Dominican republic. Dominican republic. Peru. New york. Peru. Reporter hundreds of thousands packed the Benjamin Franklin parkway. 65yearold Delfina Torres came by bus from kansas city. How long did that take . It took us 24 hours because our bus broke down. Reporter then what happened when you got here . Every day at least 18 hours walking, looking for everything. Reporter 100 faithful even camped out in a cemetery just to be here. Maria cardenas is staying with her sister, who lives in philadelphia. She spent over 1,300 on her plane ticket. As soon as she told me the pope was coming here, i came all the way from caracas, venezuela. He asked us to pray for him, and now i ask him to play for venezuela. The solanos from tucson, arizona, stayed for several months. We love him. He speaks our language and hell fight for us like were fighting for each other. Reporter sonya solano says her family immigrated from mexico. Shes personally inspired by the popes call to embrace the immigrant community. Sister anna nguyen from new york, pennsylvania, has been a nun for 35 years. It may not be customary for a nun to have a favorite pope, but is this your favorite pope . Absolutely hes my favorite. Reporter more than 750,000 people are expected to attend tonights festival, where Aretha Franklin will perform. Jim, shes expected to present the pope with sermons from her father, who was a preacher. Axelrod that would be the reverend c. L. Franklin. Thanktyou. Now to washington where the maneuvering to succeed john boehner as speaker of the house is in overdrive after his surprise announcement that hell resign. Julianna goldman now has a look at whats next. Its been an honor to serve in, in institution. Reporter announcing his resignation, john boehner issued this warning to lawmakers once hes gone. At the end of the day, the leaders have to be able to work with each other, trust each other, to find the common ground, to get things done. And so the Congress Stays focused on what is important to the American People, theyll get along just fine. Reporter but hope may spring etern nal. Boehners departure is likely to bring more turmoil to a gridlocked congress. God bless you, speaker boehner. Reporter and next speaker will be tested immediately, presiding over a fractured Republican Caucus where conservatives are eyeing budget showdowns with the president later this fall. The leading candidate for speaker is majority leader kevin mccarthy, a prolific fundraiser which has endeared him to the far right, but hes risen in the rights as an ally of boehners. Conservative activists cheered his resignation as they gathered in washington to hear from republican president ial hopefuls. I think its good. Its time. And its time for somebody else to go in there. Reporter like donald trump, who has risen in the republican field campaigning as an outsider, promising to take on the political establishment. Family Research Council president tony perkins said conservatives are looking for a speaker with that same combative spirit. Americans, conservatives who put the republican in the majority are tired of the republican majority running into every skirmish with the president weaferg a white flag. Theyre tired of surrendering. They want the fight. Reporter former majority leader eric canton who often fought with boehner came to his defense. He said, i never heard of a Football Team that won by throwing hail mary passes but thats whats being demanded of Republican Leaders today. Axelrod julianna, thank you very much. Tomorrow john boehner will be john dickersons guest on face the nation, mr. Boehners first live interview since announcing his resignation. The National Transportation safety board is now looking into that deadly crash thursday in seattle involving a charter bus and one of those amphibious duck boats. Four people were killed and does skins injured. Carter heavens tells us in the early stages the investigation seems focused on the duck boat. Reporter witnesses say the duck boat appeared to have a mechanical problem with a wheel just before the driver lost control and careened into a tour bus seconding before impact duck passenger tim gesner snapped this picture. Just as i was doing that, i felt the back of the vehicle start to fishtail, and as i turned my head, i heard the driver say, oh, no. Reporter katie moody was also on the duck boat. I remember waking up on the freeway. I saw people running toward us. People, you know, all of a sudden every good samaritan, people started coming to help. Just seeing good people, its just amazing. Reporter investigators will be looking at how the exceptionally wide duck boats navigate the narrow lanes on the bridge where the accident occurred. All of the passengers on the tour bus were Foreign Exchange students attending northern seattle college. Earl weener is with the n. T. S. B. Were interesting in the crash worthiness of a commercial open vessel like the duck boat. Reporter the company that owns the duck boat passed all recent inspection, but it has suspended operations through the weekend. Carter evans, cbs news, los angeles. Axelrod today saudi officials raised the death toll from that horrific stampede near mecca during the most important event on the islamic calendar. They now say at least 769 were killed on thursday and more than 900 injured. Heres jonathan vigliotti. Reporter overshadowed by tragedy, muslims took part in the final day of the annual pilgrimage to mecca, the religious retreat drew over two mill wherein people this year. Today dozens of Saudi Special forces were brought in to direct foot traffic near the socalled stoning of the devil. The symbolic ritual is one of the last steps of hajj. Its also the site where earlier this week many took their last living steps. Thursdays massive stampede killed hundreds. This morning during a speech at the u. N. , irans president Hassan Rouhani blamed saudi ineptitude and demanded an investigation in what has been called the worst tragedy to strike the kingdom in a quarter century. This after the saudi Health Minister blamed the pilgrims for this weeks stampede, saying they did not follow directions. But those in the crowd said key routes were suddenly closed, causing overcrowding and panic. I can blame the saudi government because they didnt control. I was there. Reporter in nearby tehran, protesters took to the streets, shouting, death to the saudi monarchy. More than 130 iranians were among those killed in the stampede. 300 remain missing. Jonathan vigliotti, cbs news, london. Axelrod a community searching for answers following the death of a High School Football star. And a tribute to the Boston Marathon bombings youngest victim when the cbs evening news continues. Axelrod just like teams do nationwide, they played High School Football in new jersey last night. In one game, a quarterback took a tough hit. He walked off on his own power, but later he died. Contessa brewer has a closer look at what happened and the risks High School Athletes are taking when they take the field. Senior evan murray looked every bit the star quarterback under the friday nightlight, leading the warren hill blue streaks in a home game in washington, new jersey, but late in the Second Quarter there was a tackle, an injury, and a trip to the hospital, where evan murray died. Evan was a great leader. He was a classact kid. He was always there for all his teammates. He played hard. Mike quinto coached evan in baseball, one of three sports at which he excelled. The person he was sption was more important than the athlete. Experts say teen athletes take risks in any sport. An estimated 1. 1 million high schooler play football nationwide. This spring there was an alarming increase in catastrophic brain injuries among those teen athletes inch 2014, five High School Players died from direct football injuries. Another six died from related reasons, like heat stroke or heart issues. How can we ensure that High School Football safety improves . Weve got to look at all the things that seem to be simple. Reporter New York University professor lee igel is an expert in sports behavior. Who is out there doing the coaching . It has to be better than somebody with good intentions. We have to look at the equipment. Very few schools, especially public schools, have athletic trainers on the field. Reporter at the home of the blue streaks, a flag flies at halfstaff and teenagers hug and write tributes on social media about evan murray, who was most admired by fellow football players, where a friday nightlight was extinguished and in the harsh light of day a football field has become a memorial. Were still waiting to learn what specifically caused evans death, what kind of injury he went to the hospital with, and whether there was an underlying medical condition, jim. Axelrod tragic. Contessa, thank you. Up next, chinese schools take a new, more american approach to education. Axelrod there was an elaborate state dinner at the white house last night. President obama hosted chinese president xi jinping just hours after negotiating a new agreement on cyber security. Even first Lady Michelle obamas dress played a diplomatic role. Its been chineseamerican designer vera wang. There is some unofficial diplomacy under way that involves chinas children, some of whom are now being taught in a style thats more typically american. Heres seth doane. Reporter these beijing Elementary Students are back in the classroom. Whether they know it or not, their education is about to be filled with grueling exams that will determine their future. Memorizing a lot of information doesnt necessarily lead to creativity or problem solving skills. Reporter Enter Boston CollegeProfessor Mike barnett. Why is the Chinese Government bringing you here now . They are seeing a lot of what their students produce is kind of imitation in nature as opposed to innovation in nature. You have to work with your partner. Reporter barnett doesnt use textbooks. Instead he teaches students to think and reason using reallife problems. How are you going to put the rocks in, the sand . Reporter barnetts methods are used in 5400 schools across the u. S. Its good to know facts, but whats really important about knowing a fact is how it is connected to other pieces of information, because as facts get connected, you solve a puzzle. Reporter fifth grade teacher zhou sisi sees the problem in her own classroom. What bothers me is that in china we dont pay enough attention to ways we can improve kids reallife skills, she said. Thats what i can learn from america. We can make this water clear. Reporter the puzzle he gave to these elementary kids in a polluted china is how do you make a filter to purify water. Why are you presenting them with this problem . Because it doesnt have a right answer. Every filter will be different that they design, and it could be that every filter works. Or every filter fails, and you learn from that. Reporter 11yearold sky called barnetts exercise vivid. It guides us to the answer instead of telling us the answer directly. It makes us think, he said, adding, the joy of thinking is infinite. In chinas testcentric culture, the freedom to fail, argues barnett, is what prompts real innovation. You can do it for 45. Reporter seth doane, cbs news, hefei, china. Axelrod still ahead, the last go round for an iconic ferris wheel. Axelrod they unveiled a new statue today to honor the youngest victim of the Boston Marathon bombing. The lifesize likeness of Martin Richard stands on the campus of Bridgewater State university. His family was, there including sister jane who, well, once a little sister, always a little sister. One of the countrys bestknown ferris wheels is taking its last spin this weekend. The Navy Pier Ferris wheel in chicago has been going round and round on the Lake Michigan waterfront for more than 20 years, but what goes up must come down. Monday it will be dismantled so a bigger, fancier ferris wheel can be built in its place. Overnight tonight all rides are free. One of soul musics great survivors has died. Trumpeter ben cauley was the only survivor of the plane crash that killed otis reading in 1967. He had a stroke in 1989 but as the leader of the bar kay, he never stopped blowing his horn. Ben cauley died in memphis. He was 67. Coming up, how the pope connects not just to the masses but particularly the millennials. Anchor as weve been reporting, the American People have had an unmistakable look at the enormous popularity of pope francis the last few day, but his appeal extends far beyond the adoring crowds. With more than 23 million followers on twitter, the pope is one of the most influential leaders on the internet. As visitors line up to write prayers on strips of cloth at the cathedral basilica of st. Peter and paul in philadelphia, 18yearold cassie saidie has a message of her own, typed in 140 characters or les. Thousands and thousands offering their prayers up to our lady. Beautiful goodiswinning. Axelrod saidie is one of the 60 digital street team volunteers, part of a social Media Campaign called pope is hope. I never thought id be able to come to philadelphia to see the pope, much less to document it and see it happen in person. Its incredible, probably a lifechanging experience im sure. Axelrod in new york citys central park, 21yearold mari eboli covered the popes visit. I called my grandma in brazil so she could be in his presence, as well. She cried. I cried. It was a very beautiful moment. Axelrod the rest of the team, at least 15 more volunteers, are working out of this social listening center inside a homeless shelter in philadelphia, reading and answering tweets, even using pope emojis. Who is going to go out and cover the grotto event . Axelrod the leader of this campaign is a 63yearold named kathleen hessert. The intention is to connect church with millennials so the conversation can get going and can be amplified all around the world. Axelrod hessert and her team will share social media data with the church so they can all better understand what matters to the millennials. If you have to help others find ways to do good, social media will be the best way to do it . Axelrod pope francis has nine twitter accounts in nine languages. Thats the cbs evening news for tonight. Later on cbs, 48 hours. For now, im jim axelrod in new york. For all of us here at cbs evening news, thanks for joining us and good night. 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