>> mason: breaking news, otto warmbier, the american student who returned from north korea in a coma, died today. >> there's no excuse for the way the north koreans treated our son. >> it's a brutal regime. >> reporter: also tonight, terror in europe. >> it's a killer. >> mason: in london a van plows into a crowd of muslims. >> hatred and evil of this kind will never succeed. >> mason: and in paris, a car carrying explosives rams a police vehicle. >> that's the idea. the legs go down. relax. >> mason: a new study finds yoga may be as good as physical therapy for relieving back pain. and celebrating an american hero. what's it like to be a direct

it's awesome. >> mason: awesome. captioning sponsored by cbs this is the "cbs evening news" with scott pelley.

experienced today." the comatose 22-year-old college student was flown back to the u.s. last tuesday. two days later fred warmbier described greeting his son for the first time in two years. >> i knelt down by his side, and i hugged him. and i told him i missed him and i was is glad that he made it home. >> reporter: north korean officials claim otto fell into a coma after he contracted botulism and took a sleeping pill shortly after he was sentenced to 15 years of hard labor. he was convicted for committing a hostile act after allegedly stealing a propaganda poster during a tourist trip last year. last week doctors at the university of cincinnati medical center said he showed no sign of a botulism infection. lead physician daniel cantor says the brain injury was likely causeled by a sudden stopping of the heart. >> there's severe injury the all regions of the brain. >> reporter: wearing the same

his trial in north korea, fred warmbier remembered what he loved most about his son. >> otto is a sweet, loving, kind person, and that's what we loved about him. >> reporter: otto's father said they received only one letter from their son before his trial and heard nothing about his condition until a week before his return. anthony, his family was at his bedside when he passed away. >> mason: michelle miller. thank you, michelle. terrorists struck again in two european capitals. early today man dove a truck enter a crowd of muslim worshipers in london. several were hurt. later in paris, a man slammed a car loaded with explosives into a police car. the attacker was killed. we have two reports beginning with elaine cobbe in paris. report it was mid-afternoon on the busy champs-elyseées when a car overtook a police convoy and

the car burst into flames. security forces in the convoy proved in quickly to put out the fire and pull the attacker out. he died at the scene. the interior minister says the attempted attack was deliberate. inside the trunk of the car were explosives and weapons. the 31-year-old man was reportedly from the paris suburbs and known to french intelligence. this is not the first time. earlier this month a man attacked a police patrol with a hammer at notre dame cathedral, and in april, a police officer was shot and killed on the champs-elyseées. as france remains on high alert, counter-terrorism police have been put in charge of this investigation. >> reporter: i'm elizabeth palmer in london where police say today's attack was not only terrorism, it was also a hate crime. the driver of the truck who witnesses say shouted, "i want the kill

entered a small group of people near a north london mosque. the attacker, identified as 47-year-old darren osbourne, was pinned to the ground, shielded by some bystanders while others pushed to get their hands on him. >> why did you do that? >> reporter: the local imam made sure he was handed over to the police. mohammed mahmoud: >> we told them the situation, there's man, he's restrained. he mowed down a group of people with his van, and there is a mob attempting to hurt him. >> reporter: just over two weeks ago, hooders were paying their respects -- londoners were paying their respects to victims of the last attack with a rented van on the london bridge by self-proclaimed islamic extremists. even then security forces were dreading the kind of tit for tat terrorist violence that could rip holes in london's multicultural fabric. today britain's prime minister, theresa may,pe

religious leaders of all faiths to appeal one more time for solidarity. >> this is no place for this hatred in our country today, and we need to work together as one society, as one community to drive out this evil that is affecting certainly so many families. >> reporter: british media are reporting the attacker darren osbourne was a father or four who lived in wales. security services says he wasn't on their radar at all, but his family is saying he had been troubled for some time. anthony? >> mason: elizabeth palmer in london. thanks, liz. turning now to the threat in the skies, homeland security correspondent jeff pegues has new information on what caused the u.s. to ban laptops on some overseas flights. >> reporter: u.s. officials are growing increasingly concerned about the terrorist organizations capabilities to target planes.

is evolving rapically and more terrorists are gaining the knowledge necessary to build a laptop bomb. earlier this month secretary of homeland security john kelly said there has been an unprecedented spike in terrorist travel. >> there are more terrorist hot spots and foot soldiers now than almost any time in history. >> reporter: in march cbs news confirmed the terrorist groups have been testing a bomb that can be hid anyone a laptop computer to evade security scanners. some of the intelligence was gathered at mosul university in iraq. the u.s. uncovered evidence that isis was testing the explosive on screening equipment taken from the city's international airport in 2014. that led the trump administration to ban larger lech trnics in the cabins of airplanes traveling to the u.s. from some airports in africa and the middle east. secretary kelly is weighing whether to expand that ban to include europe. john pistole is the former head of the t.s.a. >> there are significant logistical challenges i

magnitude from such popular airports such as heathrow or frankfort or amsterdam or charles de gaulle. >> reporter: sources say some airports have already put enhanced security measures in place. anthony, as u.s. and coalition forces continue to take back isis-controlled territory in iraq and syria, more isis-trained fighters are expected to migrate to countries where air travel to the u.s. is easier. >> mason: jeff pegues, thanks, jeff. now to a question without a clear answer. it's a question julianna goldman put to the president today. >> reporter: mr. president, are you under investigation by the special counsel? president trump ignored shouted questions today about whether he is a target of a federal investigation enter russian interference in the 2016 election, and he declined to clear up the discrepancy between his tweet from last week, saying he was being investigated, and comments from one of his attorneys, jay sekulow, over the weekend. >> i want to be clear here:

investigation. so the president is not under investigation, has not been. we have not been notified there is an investigation of the president of the united states. >> reporter: notifying targets is up to the discretion of special counsel robert mueller, and such notifications tend not to go out until later stages of federal investigations. >> it's great to have you at the white house. >> reporter: publicly the white house is operating as business as usual and appears to be bolstering mr. trump's son in but and senior adviser jared kushner, even as f.b.i. scrutiny of his russia connections intensify. >> before i came to washington, many warned me that the bureaucracy would resist any change that we tried to implement. so far i have found exactly the opposite. >> reporter: kushner made a rare public speech today to business and technology leaders, and this week he's traveling to the middle east for peace talks, but he's also looking the hire a new attorney, his current lawyer, jamie

partner at the same law firm, representing a conflict. sean spicer briefed reporters but would not allow any recordings. he said on day the president is in front of cameras, his voice should be heard. >> mason: julianna goldman, thanks, julianna. survivors of the collision of the "u.s.s. carl vinson" and -- u.s.s. fitzgerald and a cargo ship. seven crew members were killed in the saturday morning disaster. the investigation is just beginning. david martin is at the pentagon. >> reporter: how a top-of-the-line u.s. navy war ship could be t-boned by a less maneuverable containership remains inexplicable, but the result is indisputable: seven american sailors dead and the u.s.s. fitzgerald limping into court. the vice admiral, joseph

commander of the fleet, had to fight to keep the ship afloat. >> the damage is under the water line mostly, and it's a large gash near the keel of the ship. >> reporter: the japanese coast guard said the "acx crystal" plowed into the "fitzgerald" at 1:30 a.m. a web site shows the crystal making a sharp change of course at exactly that time, as if it had run into something and was coming about the see what it was. the container ship had a crew of only 20, and may well have been operating on autopilot. the fitzgerald and its crew of 300 was outbound. its bridge watch would have included an officer of the deck, radar operators and lookouts. they should have been able to see the crystal tomming from at least ten miles away. that would leave plenty of time to alter course and to alert the captain.

still in his cabin when the crystal struck. >> his cabin was destroyed. he's lucky to be alive. >> reporter: an investigation will determine who made what mistakes, but in the u.s. navy, the captain is held responsible for everything that happens aboard his ship. anthony? >> mason: david martin, thanks, david. tensions between the u.s. and russia are rising after the u.s. downed a syrian jet yesterday. washington and moscow are backing different sides in syria's civil war, which has dragged on now for more than six years. holly williams has more on this. holly? >> reporter: anthony, the u.s. coalition says a syrian regime su22 fighter jet dropped bombs close to u.s.-backed forces on the ground southwest of raqqa. knew, those forces are fighting against isis. they're supportedded by u.s. troops, and the bombs were so close that the u.s. sent an f-18 to shoot down the syrian jet, the first time that's happened

now, russia, which backs the syrian regime, has retaliated by saying that it will now track all u.s. coalition aircraft as targets. russia also says that it is shutting down cooperation to prevent midair collisions, so general dunford, the chairman of the joint chiefs of staff, said today the two countries are still communicating and he warned against hyperbole. as isis loses ground in syria, pro-regime forces and u.s.-backed forces are bumping up against each other, increasing the danger of a miscalculation with the worst-case scenario being the u.s. and russia drawn enter a direct conflict. >> mason: holly williams in istanbul, thanks. the supreme court ruled today in two free speech cases. the justicers said a ban on offensive trademarks is unconstitutional. that's a victory for the asian american rock band the slants, battling to trademark their name. it also gives a boost to the

fight to keep the trademark to their name. in the other case, the court struck down a north carolina law that banned sex offenders from social media web sites. coming up next on the "cbs evening news," the only thing rising in phoenix is the temperature. and later, a new study finds yoga a good alternative to physical therapy for back pain. won't do that. no. you can leave worry behind when liberty stands with you™. liberty mutual insurance. a lower a1c is a lot witabout choices.tes but it can be hard sometimes, 'cause different sides of you struggle with which ones to make. well, what if you kept making good ones? then? you could love your numbers.

a pill ualsed ong with diet and exercise to significantly lower blood sugar in adults with type 2 diabetes. it's proven to lower a1c better than januvia®. invokana® works around the clock by sending some sugar out of your body through the process of urination. it's not for lowering systolic blood pressure or weight loss, but it may help with both. invokana® may cause dehydration, which could make you feel dizzy or weak when you stand up, so be sure to drink enough water. important side effects to know may include kidney problems, genital yeast infections, changes in urination, or potentially serious urinary tract infections. as is risk of fracture, or increases in cholesterol or potassium. ketoacidosis is a serious condition, which can be life threatening. stop taking invokana® and call your doctor right away if you experience symptoms. or if you have an allergic reaction, with signs like rash, swelling,

do not take if you have severe liver or kidney problems or are on dialysis. taking with a sulfonylurea or insulin may cause low blood sugar. the choice is yours. ♪ lower your blood sugar with invokana®. imagine loving your numbers. there's only one invokana®. ask your doctor about it by name. >> mason: a heat wave is building in the southwest. triple dightds in arizona today and tomorrow could be even hotter. kris van cleve is there. >> reporter: it's ady like today when phoenix truly earns the name "the valley of the sun," a day when even hardened desert dwellers say it's just too hot. >> heat wave isn't a good way the describe it. it's really more lick a heat attack. >> reporter: that's when these heat warnings take urgency. is this life-threatening heat? >> it is. >>or

bigler is a pair med wick the phoenix fire departments. >> people can go from what they think is heat exhaustion to heat stroke, which is a fatal illness. >> reporter: the hottest it's ever gotten in phoenix is 122. this week that record is in jeopardy. it will be even hotter tomorrow, and phoenix has only hit 120 three times in recorded history. the heat wave is also threatening to set records across the rage, including to isn't and las vegas. even the normally cool san francisco airport reached 97 on sunday. their all-time record is 103. the heat is also being blamed for several fires in the west. this one near brian head utah has destroyed one home and is threatening several others. in california's boston bountifur snowpack is now mel sog rapidly, the kings river near fresno is flooding, forcing nearly 300 evacuations. american airlines has already canceled about 40 flights for tomorrow during the absolute peak of t

about any, while outside right now the air temperature is 115, 116, if you put the heat gun to the pavement, it's closer to 151. >> mason: wow. ouch. kris van cleve, thanks, kris. up next, yoga may be just what the doctor ordered for back pain. that's why you drink ensure. with 9 grams of protein and 26 vitamins and minerals. for the strength and energy to get back to doing... ...what you love. ensure. always be you. when you're close to the people you love, does psoriasis ever get in the way of a touching moment? if you have moderate to severe psoriasis, you can embrace the chance of completely clear skin with taltz. taltz is proven to give you a chance at completely clear skin. with taltz, up to 90% of patients had a significant improvement of their psoriasis plaques. in fact, 4 out of 10 even achieved completely clear skin.

do not use if you are allergic to taltz. before starting you should be checked for tuberculosis. taltz may increase your risk of infections and lower your ability to fight them. tell your doctor if you are being treated for an infection or have symptoms. or if you have received a vaccine or plan to. inflammatory bowel disease can happen with taltz. including worsening of symptoms. serious allergic reactions can occur. now's your chance at completely clear skin. just ask your doctor about taltz. now's your chance at completely clear skin. we come into this world needi♪ others. then we are told it's braver to go it alone. ♪ but there is another way to live. ♪ a way that sees the only path to fulfillment- is through others. ♪

what twisted ankle?ask what muscle strain? advil makes pain a distant memory nothing works faster stronger or longer what pain? advil. ♪ ♪ ♪ we all drive, some cats just know how to roll.

>> mason: a new study says yoga may be as good a treatment for back pain as physical therapy. here's jon lapook. >> ohhmm. >> reporter: this may sound like the beginning of a typical yoga class, but it's not. everyone here suffers from back pain. >> i'm much more comfortable with movement. >> reporter: 74-year-old judith zaborowski took up yoga more than ten years ago help with her aching back. >> yoga makes me think about my back and how i'm standing and if i'm standing properly, then i can function better. >> reporter: in the study, 320 adults with moderate-to-severe back pain

approaches over 12 weeks -- weekly yoga classes, 15 physical therapy visits, or education about how to cope with become pain. yoga was just as effective as physical therapy, and both groups were about 20% less likely to use pain medication than patients receiving education alone. yellinga classes started with relaxation exercises, bodily harmup, then gentle yoga poses like wall dog and chair twist. >> oh, my gosh, i didn't think it was possible. >> reporter: dr. robert saper at boston medical center is one of the authors. >> yoga was as effective as physical therapy for reducing pain intensity, and, perhaps most importantly, reducing pain medication use. >> reporter: saper says yoga likely works by strengthening core and lower back muscles and helping with mind-body relaxation. >> i feel the more one can do for one's self-and not depend on medication, the healthier it is

>> reporter: open -- opiate overdoses are now the leading cause of death for people under 50, a compelling reason to find relief not involving narcotics. >> mason: my wife is always telling me to go to her yoga class. next, she showed american slaves the road the freedom. ♪ ♪ ♪ ♪ ♪

s fleas, ticks and mosquitoes. got any ideas?ting you? not all products work the same. my owner gives me k9 advantix ii. it kills all three through contact. no biting required. so they don't have to bite? that's right. no biting required. k9 advantix ii. wise choice.

when this guy got a flat tire in the middle of the night, so he got home safe. yeah, my dad says our insurance doesn't have that. what?! you can leave worry behind when liberty stands with you™. liberty mutual insurance. i'm ryan and i quit smoking with chantix. i tried to quit cold turkey. i tried to quit with the patch; that didn't work. along with support, chantix (varenicline) is proven to help people quit smoking. for me, chantix worked. it reduced my urge to smoke. compared to the nicotine patch, chantix helped significantly more people quit smoking. when you try to quit smoking, with or without chantix, you may have nicotine withdrawal symptoms. some people had changes in behavior or thinking, aggression, hostility, agitation, depressed mood or suicidal thoughts or actions with chantix.

serious side effects may include seizures, new or worse heart or blood vessel problems, sleepwalking or allergic and skin reactions which can be life-threatening. stop chantix and get help right away if you have any of these. tell your healthcare provider if you've had depression or other mental health problems. decrease alcohol use while taking chantix. use caution when driving or operating machinery. the most common side effect is nausea. i'm so proud to be a non-smoker. ask your doctor if chantix is right for you. many insurance plans cover chantix for a low or $0 copay. >> mason: on this juneteenth,adf slavery in the u.s., we end with womb field. story of an american >> reporter: angela crenshaw is with the new harriet tubman

underground railroad visitors' center where tubman's legendary life is on vivid display. what impresses you most about harriet tubman? >> her resilience. she got knocked down so many timing but she kept standing up. >> reporter: born into slavery as a young girl, tubman worked in the backwoods in brutal conditions. >> she had to now outdoor survival. >> reporter: that became a lifesaver when she escaped slavery at age 27 and made the arduous journey to pennsylvania and freedom. over the next decade, she repeatedly risked her life, returning to maryland a dozen time, rescuing more than 70 family members and friends, guiding them north along the underground railroad, a secret network of trails, waterways, and safe houses. tina wyatt, a direct descendant of tubman, brought her grandchildren here to teach them about their heroic relative. what's it like to be a direct

descendant of harriet tubman? >> it's really exciting. it's awesome. >> mason:>> reporter: awesome. wyatt took us to the buck village store where as a child tubman was hit by a heavy weight thrown by a slave owner. >> almost killed her. >> reporter: jay meredith turned the store enter a museum. his ancestors owned slaves. >> about five foot tall and hunted. when you think about tubman and the adversities she overcame, that's phenomenal. >> love, faith, family, human rights, that's her legacy. >> reporter: a descendant of slaves and a descendant of slave owners, both working to honor an american hero. chip reid, cbs news, church creek, maryland. >> mason: a conductor on the underground railroad, and she said, "i never lost a passenger." that's the "cbs evening news." i'm anthony mason. thanks for w

we will start with a yellow weather alert. storms blowing through the capital region. some impact in the area. we have more. >> south and east of town, that is where the severe weather is occurring tonight. from prince george's, points west and north, in the clear of the watch. but the brighter yellow here is a warning. that is the northern neck. and will probably parlay the warnings across the river and southern maryland. light showers toward leesburg. the heaviest activity pushing across 95 into southern maryland. these are the heaviest storms. we have severe warnings until 7:30 p.m. for westmoreland county.