make republicans the minority again. >> pelley: a sea change at seaworld. the curtain is coming down on killer whale shows. and the players who turned riding bench into an art form. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: late today, the skies opened fire on texas. a violent storm assaulted the dalath-forth worth area with huge hail stones leaving vehicles looked like they'd been attacked by machine guns. vinita nair is here with the story and the pictures. >> reporter: hail, ranging in size from an egg to a tennis ball, destroyed just about everything it fell on this morning here in the dallas-fort worth area. in arlington, texas, the violent storm paralyzed the morning commute. in dallas, backyards were covered in a sheet of white. more than two dozen medstar

services. some of their windshields were punctured by baseball-sized hail, others completely shattered. this greenhouse roof blown over by the storm, the fort worth zoo said the hail killed a number of exotic birds, including five flamingos. the bad weather may not be over yet. there is a 40% chance of showers and thunderstorms in dallas tonight and a 50% chance through friday. scott. >> pelley: vanita, thank you. from broazen water we turn now to tainted water. the e.p.a. says over four years, the drinking water in 431 american schools were found to contain unsafe levels of lead. today, they began testing kids in newark, new jersey, after lead was found in the water at 30 schools. anna werner is there. >> reporter: tanquir walker brought his daughters into school today for a lead testing. >> i think school is the first place that they should be safe in.

not on tom of thip game. >> reporter: he joined dozens of other parents concerned about elevated lead levels found in 30 newark schools this year. and the district has now revealed 12% of the water samples taken between 2012 and 2015 have also been above the federal limit of 15 parts per billion. doctors say no level of lead is safe for children. valerie wilson is a newark district administrator. she blames old fixtures. >> we have 67 schools. they average 82 years old. the building infrastructure needs to be replaced. that is significant. >> reporter: wilson says the district has been addressing lead problems in schools' water since 2004, including adding water filters. but the teachers' union released these pictures of what it says are outdated filters, some dated 2012. union president john abeigon: >> i believe they pushed it to the back burner because it was not on their to-do list. >> reporter: are you

not been hurt by these higher lead levels? >> i am not a medical expert, so i cannot provide that. i don't want anybody to think the district is not concerned about that, right. but it is not a primary source of contamination for children. >> reporter: now, district officials tell us tonight they disagree that those filters the union photographed were outdated but could not tell us how many filters need to be replaced. scott, the superintendent has brought in state environmental officials to work on this problem, and children here are already drinking bottled water. >> pelley: anna werner, thanks. well, the water crisis in flint, michigan, boiled over on capitol hill today. more than 150 flint children have elevated levels of lead in their blood. democrats excorrated michigan's republican governor, while republican congressmen blamed president president obama's e.p.a. administrator.

>> reporter: the publicking was unrelenting for michigan governor rick snyder. >> the buck stops at your office, governor. >> you are not in a medically induced coma for a year. >> governor snyder's administration caused this horrific disaster. disaster. >> reporter: it was the first time lawmakers grilled the governor about his role in flint's water crisis. snyder admitted responsibility but blamed federal oversight. >> an unaccountable bureaucrats at the e.p.a. allowed this disaster to continue unnecessarily. >> reporter: in april 2014, flint started pumping local river water to save money, but the improperly treated water stripped lead from pipes, doubling the number of children with lead poisoning. the governor says he only learned about the contamination 18 months after the switch. before that, he says his own water officials told him the water was safe. e.p.a. chief gina mccarthy said those same state officials misled her agency, too. >> from day one, the state

with confusing, incomplete, and absolutely incorrect information. >> reporter: that wasn't good enough for republican chairman jason chaffetz. >> you need to take some responsibility because you screwed up and you messed up 100,000 people's lives. >> reporter: 72 children have tested positive for elevated lead since october. it's an improvement over last year. but flint residents are still angry. >> snyder got to go! >> reporter: they came to the capitol by the bus load. melissa mays had a ringside seat. she said she was frustrated by the finger pointing but is glad somebody is listening. >> for the longsest time we were told we didn't matter, what was happening to us didn't dnot matter. we're seeing support from across the country and i think it's going to give us more energy to keep the fight going. >> reporter: today, democratic congressmen called on the governor to resign and republican congressmen called on the e.p.a. chief to resign. congress itself may be slowing down flint's recovery.

been introduced for cities with water problems but it's stalled. >> pelley: more tauxe than action. adriana diaz on capitol hill. adriana, thank you. donald trump has over half the delegates he need for the republican nomination, but today, conservatives in his own party were searching for ways to stop him. here's major garrett. >> the fact is we have to bring our party together. >> reporter: as donald trump moves closer to the 1237 delegates needed to secure the nomination, republican calls for anybody but trump are growing louder and more desperate. today, senator lindsey graham, long a bitter adversary of ted cruz, relented and backed the texas senator. >> so i think the best alternative to donald trump, to stop him from getting to 1237, is ted cruz. and i'm going to help ted in every way i can. >> reporter: marco rubio, who dropped out of the race tuesday, returned to capitol hill and added to the anti-trump sentiment. >> hopefully, there's time to still, you know, prevent a trump nomination, which i think would fracture the party and be

>> reporter: trump needs just over half the remaining delegates to win the nomination outright. short of that majority, republicans, those running the convention and delegates, would face the first contested convention since 1976, a public spectacle and last chance to stop trump. delegates are bound to a candidate only for the first floor vote. the cruz and john kasich campaigns have already begun wrangling support in the event of a second ballot. party rules won't be finalized until the convention and could be manipulated to benefit one candidate over another by change the way delegates are allocated or recognized to vote. g.o.p. chairman reince priebus. >> those rules are drafted by the rules committee at the convention that governs the convention. we don't use the rules that are drafted for the last convention. >> reporter: the once-fanciful idea of a contested convention is now so real, no interested party can afford not to plan ahead. the r.n.c. is recruiting rules

so is trump, so are his rivals. scott, this could be the billionaire real estate developer's biggest art-of-the-deal challenge ever. >> pelley: major garrett tonight. major, thank you. by the way, today, illinois state police and the chicago p.d. dropped charges against cbs news reporter sopan deb. deb was covering the unrest at that canceled trump really in chicago on friday when officers pushed him to the ground and arrested him. deb was charged with resisting, but he was cleared after a review of video and interviews with the officers. late today, bernie sanders conceded the close vote in tuesday's missouri primary, meaning that hillary clinton swept all five states. democrats are looking ahead now to a possible trump nomination and asking themselves whether the billionaire will help them win back the senate. republicans have a four-seat majority, but they have 24 seats up in november, and the

here's nancy cordes. >> reporter: arizona senator john mccain has called trump's views uninformed and dangerous. but that hasn't stopped his democratic senate challenger, anne kirkpatrick, from running ads like this. >> no matter what donald trump says, john mccain would support him for president. >> reporter: new york senator chuck schumer warned today that strategy will be replicated in dozens of races across the country. >> donald trump won't make america great again, but he will make republicans minority again. >> reporter: unlike mccain, many republicans have been reluctant to outright denounce trump. they fear that weakening the likely nominee will lead republican voters to stay home in november, hurting g.o.p. candidates down the ballot. but today, the senate's democratic leader, harry reid, said that silence is giving his party fodder, too. >> some of these people are running for reelection. rob portman, roy blunt.

people could run and say why i'm supporting this guy for president. he can't-- and he can't run away from it. he's the nominee. >> reporter: republicans point out they're the ones seeing record turnout in the primaries, while democratic turnout is down. but, scott, democrats insist that if trump is the nominee, their base will flock to the polls in november to vote against him. >> pelley: nancy, thank you. an american who joined isis and surrendered in northern iraq this week spoke today about his ordeal. mohamed jamal khweis is a palestinian american from virginia. he says he joined the terror group in december and quickly figured out the lifestyle was not for him. >> at the time, i-- i made the decision to go because i wasn't thinking straight. that environment. i would-- you know, i wanted to go back to-- to america.

he will return to the u.s. but the justice department is preering to file charges. our elizabeth palmer was told isis is running short of money because of the u.s. bombing campaign. liz got a rare interview with president obama's special enjoy voi to the region which said russia may be tired of propping up the syrian dictator. >> reporter: for the past six years, russia's government and its military have shown unwavering support for syrian president bashar al-assad. but that, at last, may be changing, says brett mcgurk, the president's special envoy on iraq and syria. >> i think there's an emerging international consensus, and i include the russians on that, that without a very serious political transition, this conflict is going to continue to grind on and that's in nobody's interest. >> reporter: consensus on shutting aso-called out of syria's political future would be a breakthrough and give fresh energy to the peace talks

while on the battlefield, where an international coalition has joined forces against isis, there's already been steady progress. a new report shows that over the past 15 months, isis has lost more than a fifth of the territory it controlled in iraq and syria. and, says mcgurk, strains are showing in other ways, too. >> so now, cutting salaries for their fighters by almost half. when they store money in mosul, for example, we find out where that is, and we target those sites. >> reporter: bomb the money. >> they can't pay their fighters. they can't communicate with their fighters. they can't move around the battlefield like they could before, and they can't hold territory. >> reporter: isis is still holding a huge amount of land, as well as two major cities, but if the current momentum holds, it's just possible isis territory will continue to shrink as the outline of a peace deal in geneva slowly takes shape.

details on that peace agreement, or even maybe an inkling of what's in store for president assad when secretary of state week. >> pelley: liz palmer with the key interview tonight in liz, thank you. and we have just learned that 12 members of the u.s. military are to be punished for the mitaken attack on a hospital in afghanistan last october. at least 19 people were killed in a sustained air strike at the doctors without borders charity hospital. david martin at the pentagon has learned that the dozen u.s. personnel will receive administrative punishments. they will not be court-martialed in criminal proceedings. a texas cop has been charged with murder in the death of a 16-year-old. and we'll remember the chairman of the board's ha-apparent, when

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>> pelley: a police officer in a dallas suburb is charged with murder in the shooting of a 16-year-old boy. the officer's lawyer says he fired in self-defense. here's david begnaud. >> reporter: in an emotional farewell, hundreds of people said good-bye today to 16-year-old jose cruz at a small church in addison. cruz was fatally shot four days ago by off-duty officer ken johnson. johnson said he witnessed the teen and his friend burglarizing a car at this apartment complex. sphers johnson confronted the boys, who then took off in cruz's vehicle. johnson pursued them in his own car, ramming into the teens at this intersection. eyewitness photos then show johnson getting out of his car and pointing a gun at the two teenagers. moments later, he shot the two boys, killing cruz and injuring his friend. police chief sid fuller: >> we have policies that deal

we all follow. >> no. >> reporter: cruz's mother has been inconsolable, attending community vigils where hundreds of people have been protesting against the police. cruz family spokesman carlos quintinilla: >> what this officer did is he thought he had sovereign immunity. he thought he was in the wild west. he thought he was a vigilante. this is a cold-blooded murderer who murdered a 16-year-old, innocent young man. >> reporter: here's where it happened. that's the intersection where the officer rammed the vehicle, and i am standing in the spot where the shots were fired. scott, that officer who was charged with murder, that arrest happened yesterday, but by this morning, he had posted a $150,000 bail and walked out of jail. >> pelley: david begnaud tonight. david, thank you. there are big changes coming at

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said it will phase out its killer whale shows, giving in to pressure from animal rights activists. here's ben tracy. >> reporter: seaworld is ending the shows that made shamu a houps hold name. the company will also no longer breed its captive orcas. seaworld c.e.o. joel manby on "cbs this morning"." >> so this will be the last generation of orcas at seaworld. obviously, that's a very difficult decision for us, but we feel it's the right one for the future of the organization. >> reporter: seaworld still holds 23 orcas in captivity at its three parks in san diego, san antonio, and orlando. the highly critical 2013 documentary "black fish" was the beginning of the end for seaworld's killer whale shows. it chronicled attacks on seaworld trainers such as dawn brancheau, who was killed by a massive orcas in 2010. attendance has been falling at the parks, along with seaworld's stock price. the company is now entering into

the humane partnership, the one-time adversary. c.e.o. wayne pacelle. >> we're hoping to partner with them to help with animals in distress-- stranded whales, stranded dolphins, stranded sea turtles. >> reporter: seaworld was running out of options. the california coastal commission ruled it could not expand its san diego park unless it ended orca briefing. california congressman adam schiff said seaworld does dnot suddenly see the light. >> i think it is mostly a decision based on the fact that people were not showing up at the parks. people did not approve of the continued captivity of these whales. they didn't approve of how they were being exhibited. >> reporter: now, the orcas will still be on display at seaworld parks, such as this one here in san diego, but in what the company calls more natural orca encounters. scott, seaworld made a lot of money selling orcas to theme parks around the world, something say they say won't do anymore. >> pelley: ben, thanks.

the chairman of the board's son became a singer. at 19 he was kidnapped and returned after his father paid the ransom. he went on to become the keeper of his father's flame. frank sinatra jr. died of a heart attack yesterday. he was 72. and we'll be right back. or adempas for pulmonary hypertension, p as it may cause an unsafe drop in blood pressure. do not drink alcohol in excess. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, get medical help right away for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away.

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leaders of the bench mob, a bit of sideline theater to get the team and the crowd going >> bench is never known as a cool place to be. so we kind of revolutionized it a little bit where it's okay to be on the bench and support your team because it's a grawp effort. >> reporter: the group rehearses its celebrations before games, playing off current events, pop culture-- >> "star wars." >> reporter: and sometimes a little bit of history. during their victory in december over basketball powerhouse georgetown, they unveiled what they called the sistine chapel. >> look at that. that's the sistine chapel. that's my favorite one. >> reporter: what do your teammates say about it? >> they love it? >> reporter: do you feel like it helps them? >> absolutely. if they look over at the bench and see we're in the game and we're energized and trying to feed energy to them. they'll be like, if they're in it, how can i not be in it. >> reporter: basketball teams across the country have picked up on their antics. high school teams and even

coach king rice. >> i really preach having fun, especially to my guys. you should have fun when you're doing what you love. >> reporter: doing what they love while changing attitudes about riding the pine. elaine quijano, cbs news, west long branch, new jersey. >> pelley: and the

that's the cbs evening news f >> champions of the world, denver broncos. >> and it's caught for the win! >> one of the epic performances. jason day, major champion. >> derrick henry will win it, national champions.

>> the ball is tipped and there you are you're running for your life >> you're a shooting star >> one shining moment >> is all on the line. >> one shining moment >> frozen in time -- >> i'm not a good singer, so don't ask me to sing. >> i got to sing the whole thing? >> and when it's done -- >> win or lose, you always did your best. >> because inside you knew >> one shining moment that's good. [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] james: hello, everyone, and