Good evening. And we begin with breaking news on several fronts. First, boston tonight. The accused boston bomber Dzhokhar Tsarnaev the trial starting with a chilling admission from his own lawyer saying it was him. But then making the case that his older brothers influence made him do it. And at this hour startling new images at the moment those bombs went off. Prosecutors showing the pictures building a case for the deltath penalty. A dramatic and difficult first day in court for so many survivors who were right there in the courtroom. Abcs chief investigative correspondent brian ross is also there. Reporter with new video made public for the first time today, prosecutors brought back the horror of that festive spring race day in boston. The first bomb blast. And then in the distance the second much more powerful blast. Inside a nearby sports store, stunned and wounded spectators stumble in. The store manager uses running clothes to fix a tourniquet on the leg of a badly injured woman. Others ripped closes off the rack to be used as tourniquets for the wounded still outside. It was a dramatic opening day in the trial. Attended by dozens of victims who were wounded or lost limbs in the attack. And in a surprise opening state tsarnaevs lawyer flatly stated it was him, admitting he was guilty. But she pointed to this video to claim her client was only following the path created by his older brother, later killed in a police shootout. Setting the stage for a defense that could help the younger brother avoid the death penalty. Given the amount of evidence the government has, i would suggest its the only strategy. Reporter and perhaps the most damning video will be shown next week an extension of this still photo. Tsarnaev his hat on backwards, right after he dropped the bomb in his backpack on the ground just feet away from the Richard Family whose 8yearold son martin died in the blast. Prosecutors told the jury today they will prove that tsarnaev was a committed terrorist in his own right, a sollier in a holy war, out to punish america. David . Brian ross leading us off tonight from boston. Brian, thank you. Now to the breaking news at this hour overseas. The American Ambassador to south korea, injured in an attack. Seen bleeding rushed to the hospital. He was reported to be on his way to a lecture in seoul. Abcs terry moran in our London Bureau tonight. Terry . Reporter david, u. S. Ambassador mark lippert in seoul on thursday morning. Thats the time it is right there, as you said on his way to a lecture, attacked by an assailant. South korean media reporting that the assailant yelled no to war training and attacked his face. He was rushed to a nearby hospital. White house officials telling abc they are aware of the situation, they are monitoring it. We should tell you that the United States and south core korea have been engaged in military training right now, north korea has been firing away its usual threats. David . Terry moran live in london tonight on the attack on the American Ambassador to south korea korea. There is also breaking news back here at home tonight out of ferguson missouri. Darren wilson now 0officially cleared of civil Rights Violations in the shooting death of michael brown. Tonight, browns family speaking out, and it comes 24 hours after that scathing report finding a pat herb of racism and discrimination inside fergusons police force. And tonight, stunning new revelations, emails from officers making racist remarks. Abcs senior justice correspondent Pierre Thomas with the emails as the police are set to respond. Reporter no federal prosecution of the white Police Officer in the Fatal Shooting of an unarmed black man. The facts do not support the filing of criminal charges against officer darren wilson. Reporter wilson had always maintained his innocence, including in this exclusive interview with abc news. Is there anything you could have done differently that would have prevented that killing from taking place . No. Reporter from the family of michael brown, disappointment. Its unimaginable to them that their child could be killed and no one be held responsible for it. Reporter but while holder declined to prosecute wilson today, he indicted the practicing of the Ferguson Police the Municipal Court and City Government as biased against blacks. According to the Justice Department though africanamericans make up 67 of the towns population they were hit with 90 of police citations. These policing practicing harm africanamerican residents. Reporter 90 of alleged Excessive Force victims were africanamericans. Police dogs only used on blacks. And the investigation uncovered racist emails from Police Supervisors and court officials. One depicted president obama as a chimpanzee. Another included a photo of bare chested women afarntly in africa with the caption, Michelle Obamas high school reunijobonreunion. David . Pierre thomas on this case again tonight. Pierre thank you. We turn now to denver and the emergency evacuation on the tarmac there. Passengers sliding to safety today, standing in the snow. After the pilot ordered them to get off the plane, it had just landed moments before. And abcs clay son sandell from denver. Reporter this snowy yy yy taxiway in denver is not where passengers expected to get off. What the [ bleep ] is going on . Reporter using emergency slides to evacuate this airbus jet after reports of smoke in the cabin. They say the reason he e evacuated the cabin is because he had smoke rolling through the cabin. Reporter Brooks Robinson was in the 14th row. Down the escape slide. We had to evacuate. It was an odor i wasnt familiar with. Reporter his flight usair ways 445 was on the way from charlotte to denver with 158 passengers and six crew. The plane had already landed but as it taxied to the gate, the pilot was alerted to the smoke and making the call to deploy those emergency slides immediately. Passengers were bussed to the terminal paramedics checked them out. Were there any injuries . There were several, but they were very minor. Reporter here in denver officials do not believe there was a fire on board, but they still havent figured out where the smoke came from. The airline says they have notified the faa and the ntsb. David . All right, clayton sandell, thank you. Yet another winter blast tonight, what many are hoping will, quite frankly, be the last. Tonight, 90 million americans, 24 states from new mexico all the way to the northeast, under Winter Weather alerts. Treacherous driving in the morning. Another complication tonight, warmer temperatures and rain melting all that ice before the cold sweeps in again. In West Virginia chunks of always on the river there. Dangerous driving on i57 in marion illinois. And listen to the ferocious winds there. This is a highway in missouri tonight. Ginger zee standing by with the storm track. But first, abcs alex perez from louisville with the images already. Reporter it took just seconds for a swollen creek to wash away this temporary bridge in lyburn, West Virginia. Melting snow, heavy rain creating flooding problems and massive ice floes here. Look how fast that is. Holy cow. Reporter in red rock, pennsylvania emergency crews had to rescue carol linynn and her dogs by boat after floodwaters inundated her home. He had to carry us on his back to the raft. Reporter tonight, all that rain is turning to snow and pushing east. 24 states from new mexico all the way to massachusetts under Winter Weather alerts. In southern illinois, whiteout conditions. Icy roads and fog blamed for this 23car pileup on i84 near greenville, new york today. One driver in roseville, minnesota, lucky to be alive after a chunk of ice crashed through the windshield. Today, more than 4,500 Flights Canceled and another 1,700 already grounded for tomorrow. And here in louisville, kentucky and parts of the midwest they are bracing for whats to come, this storm expected to dump several inches of snow here tonight. David . All right, alex thank you. Lets get right to ginger now. Going to take us through this hour by hour. Its going to be tough tomorrow morning. Reporter this is very important to pay attention. So find europe place on the map. Were taking it here from tonight, where its overnight, changing in parts of texas, up through northwest arkansas and tomorrow morning drive time, im concerned about nashville, down through jackson, mississippi, up through baltimore. Thats how far north this goes. I think the heaviest snow falls just south of new york city. Philadelphia youll get in there. And indont think this is all snow. A lot of this already falling as sleet and ice. You can see that large swath that will be affected. Western tennessee, southeastern missouri all the way here to just north of d. C. Seeing pockets where theres six to ten inches. This late in the winter. And look at the numbers. Cold after it. Really cold. 1 below, lexington. Were looking forward to next week. Above average temperatures return. Im going to hold you to that. Ginger thank you. We move on now to Hillary Clinton tonight, taking the stage amid that firestorm over her use of private email for her public job as secretary of state. Did she do anything illegal . She said nothing about the emails, but she did Say Something else. Abcs chief White House CorrespondentJonathan Karl tonight. Reporter silence today from Hillary Clinton as her email story gets stranger. We are learning that not only did mrs. Clinton, in a possible violation of federal regulations, completely bypass the state departments email system it turns out she bypassed big email providers like gmail and yahoo , instead running her emails through a private server apparently set up at her home in chappaqua, new york, a fact first reported by the associated press. Even odder, her email server is registered under the name eric hoteham. The clinton team is not say who that is. Its a big leap for someone who at a private fundraiser back in 2001 said she wanted no part of email at all. As much as ive been investigated why would i ever want to do email . Reporter mrs. Clinton headlined a big fundraiser for the group emilys list last night, saying nothing about the email controversy, but reminding her supporters of the history she hopes to make. Dont you someday want to see a woman president of the United States of america . Reporter clintons aides say she did absolutely nothing wrong. That she kept all of her emails and two months ago, turned over 90 of them to the state department, including all of those related to official business. All right, jon. She says she did nothing wrong. But even if there was nothing illegal here if other Administration Officials used government email, why not Hillary Clinton . Reporter well because she decided not to. As to why she made that decision weve been asking the clinton team that for two days all they will say is that she did nothing wrong. Now, republicans in congress are not buying that in fact david, today, they issued their first subpoenas demanding all her emails related to the attack in benghazi libya, in 2012. All right, jon karl with us again tonight. Jon, thank you. From the white house, to the Supreme Court tonight. Will obamacare survive . The fiery battle over the president S Health Care law. Debating those tax credits given to millions of americans to help them afford health care premiums. Tonight, one of the justices giving a bit of a hint about which way the case might go. Abcs jim avila. Reporter its an effort to kill obamacare, leaving 7. 5 million americans without health insurance. A lawsuit brought by four people who didnt want to be forced to buy it and designed by a conservative think tank. All based on four words buried in the 900page law. Established by the state. The Affordable Care acts marketplaces were designed to be administered by state governments, but only 16 signed on to do so. Thats when the federal government stepped in, making insurance available and paying subsidies nationwide. Today, the plaintiffs before the Supreme Court arguing that is illegal, because of those four words, established by the state. But the Obama Administration argues thats just a technicality. This is one of those cases where the effect could be dramatic, right . It could be dramatic and it could be immediate. Reporter impossible and unwise to predict how the justices will rule. But one hint from a critical swing vote today. Anthony kennedy, who told the plaintiff attorney ruling in their favor would send the entire obama care program into a death spiral. David . Jim avila, thank you. There is still much more ahead on world news tonight this wednesday. The big announcement from a fast food giant. Major changes tonight, because of what was in the chicken. Will others follow suit . Also the family on safari getting a big scare. The lion approaching the car, opening the door there. Youll see what happens next. But first tonight, asleep at the wheel. The bus driver nodding off. Tonight, we see what happens. Crashing into just about everything in his path. That story coming up next. Yet im so awake . Did you know your brain has two systems . One helps keep you awake the other helps you sleep. Science suggests when you have insomnia, the wake system in your brain may be too strong and your neurotransmitters remain too active as you try to sleep, which could be leading to your insomnia. Ohh. Maybe thats whats preventing me from getting the sleep i need talk to your doctor about ways to manage your insomnia. 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. vo maggie wasnt thrilled when ben and i got married. I knew itd take some time. And her sensitive stomach didnt make things easier. It was hard to know why. The move. Her food. . So we tried purina cat chow gentle. Because its specially formulated for easy digestion. Shes loved it ever since. And as for her and ben. Shes coming around. Purina cat chow gentle. One hundred Percent Complete and balanced for everyday feeding of adult cats. Next tonight, the bus driver who falls asleep at the wheel, as cameras roll. Abcs linsey davis now on the multiple collisions and the injuries tonight. Reporter watch the video just seconds before impact the bus driver slamming on the brakes so hard he appears to stand up. But its too late. The driver plows into seven cars sending one of them careening into oncoming traffic. Watch again. From multiple angles. The windshield falls out completely. Behind the bus a wake of destruction. It happened last october, around 6 00 p. M. In west bloomfield, michigan. The driver quickly admitting to investigators what went wrong. What happened . I fell asleep coming down that hill. Reporter sleepy drivers are to blame for 1 out of every 5 car accidents, killing 7,500 people and seriously injuring 50,000 each year. In this crash, a husband and wife both sustained serious injuries. And that bus driver 65yearold leon rasheed, now facing a criminal charge. A moving violation causing serious impairment of body function. His plea in court today not guilty. Telling abc news that he has medical issues and hes sorry for what happened to the people involved. As for the sole passenger on the bus . Are you all right . I sure am. Reporter her choice of seat this day may have made all the difference. Linsey davis abc news new york. When we come back here the famous nba faces now leaning in together. Also the fast food giant making changes tonight over something in the chicken. And then the family on safari getting a big scare when the lion opens the door on his own, coming up. Please, please, please, please, please. [ male announcer ] the wish we wish above all. Is health. So we quit selling cigarettes in our cvs pharmacies. Expanded minuteclinic for walkin medical care. And created programs that encourage people to take their medications regularly. Introducing cvs health. 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The new Energy Superpower . Its red, white and blue. Log on to learn more. To the index tonight. Mcdonalds no longer using chickens raised with antibiotics, saying theyll be phased out over the next two years. Blurred lines and today, pharrell arriving at court for the battle over that hit song. Lawyers now revealing how much blurred lines made. More than 60 million. 5. 6 million to robin thicke another 5. 1 to pharrell. A family getting the scare of their lives. While on safari look at this. A den of lions. One approaching the car. And very smart, actually opening the door with her teeth. Ahh screams and all, but the family is okay tonight. Just lock the door next time. When we come back here tonight, that longtime puzzle back in the news this evening. Can you solve it . A father and son are in a car accident. The father is killed. The son seriously injured. The son is taken to the hospital where the surgeon says i cannot operate because this boy is my son. Can you solve it . 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Lets all lean in together. Show the world you support women at work and at home. Reporter lebron james and monge the faces tonight, pledging to lean in together. When you have basketball players saying theyre going to lean in too. So powerful. Because in order to get to equality we need men to lean in as much as women. Reporter the conversation Sheryl Sandberg started about women, leaning in is tonight about to add new players to the game. Equality is not just good for women. Its good for men themselves. Reporter and she says theres evidence. Take startups. New companies that have more than doubled the average number of women executives. They generate more revenue. Companies that have more women and more diverse leadership outperform others. Reporter but she says it has to start young. Faurms showing rather than just saying. Sharing the housework, the laundry. Wnba star elena della don and the psa, speaking about her brother. One of my favorite parts is when you hear her say, my brother used to my brother picked me above his friends to be on his basketball teams. Reporter and sandbergs Research ShowsSomething Else in this home. We have a wage gap that begins when youre a sodder er willtoddler. We pay little boys more for chores than little girls. Reporter when team here that they might think, i dont dot that in my house, but think of the trash. Thats right. Boys take out the trash. Boys set the table and boys get paid more. Reporter equal pay, she says and equal duties for woman and dad. By the age of 14 young girls who have fathers who do things in the home have broader aspirations than those that dont. Reporter how does seeing your dad too the dishes translate into success for you . You believe that men and women have equal roles. Reporter how fitting the nba now joining to lean in together. That recent headline becky hammond, the first female fulltime assistant coach in the nba. Help women aim high. Reporter and the players on board. I think its great. Because, all those guys are role models so it helps. Reporter what do you think . As the father of two daughters, im really happy about that. Anything that promotes women and whether its on the court, baseball field, or in academics, i think its great. Reporter it takes us to that puzzle sandberg wrote about. A father and his son are in a car accident the father is killed. And the son is seriously injured. The son is taken to the hospital, where the surgeon says can i not operate, because this boy is my son. 40 to 75 dont get the puzzle. Cant get it. Reporter in the puzzle that surgeon is the boys mother. Thats because when we see performance at worker leadership we expect it to be male. Reporter now, so nba and wnba faces pledging to help change that. We are not going to get to equality until men understand that it benefits them. It benefits them in their workplaces and their home. Our thanks to sheryl. We hope you keep the conversation going. We thank you for watching this wednesday night. Im david muir. Hope to see you back here tomorrow. Good night. This is jeopardy introducing todays contestants a newscaster and editor from perry, kansas. A highschool assistant principal from wenatchee, washington