Now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. There is a fresh indication as we start tonight that Hillary Clintons support among voters is eroding in the face of the scrutiny over emails she exchanged on a private server when she was secretary of state. While mrs. Clinton remains the undisputed frontrunner for the democratic nomination, new polling confirms a falloff both in the democratic race and in a matchup with gop frontrunner donald trump. And it appears to be forcing some changes in her campaign. Our political director chuck todd takes a closer look. Reporter on her first day of vacation in the Hamptons Hillary clinton is trying to take a few days off and celebrate president clintons 69th birthday. But yet another poll today indicates that persistent questions about her handling of emails as secretary of state are taking a political toll. Shes now under 50 in a democratic primary. And that erosion of support is also showing up in a matchup with republican frontrunner donald trump. Clintons nearly 25point lead in late june is down to 6. Believe it or not, today trump tried to play down his good poll numbers, but still found time to take a shot at clinton. Right now i have 16 other people that im looking at, and thats not my focus. But indirectly it probably is. I think hillarys going to have a hard time being in the election based on whats happening with the emails, the servers, maybe even the speeches. Reporter and he went on to twist the knife. Her bigger problem is not the election. I think her bigger problem is going to be the criminal problem. Reporter tuesday clinton was put on the defensive over emails at a combative press conference. You were the official in charge. Did you wiept server . What, like with a cloth or something . Reporter she was so dismissive of the controversy as she left she said this. Nobody talks to me about it other than you guys. Reporter later in an interview with telemundo she repeated her basic defense. I never sent classified material. I never received anything marked classified. This will burn itself out. And its being turned into a partisan attack. Reporter today clinton allies desperately tried to push back. Mock the criticism as old news. You know, these people, we dont like hillary. What does that paul begala and jim carville out there defending her . Why cant we just attack her like we want to . And i understand that. Ive been dealing with this for 23 years. Reporter but the campaign is mindful of the political damage this controversy is doing. Theyre on the air earlier than they ever planned with tv ads, including this new one today. Look, lester, the campaign is trying to will this away as nothing but cheap partisan politics. But guess what . The calendar doesnt allow for them. Mail issue to go away for her because she still has to testify before congress in october and the fbi is still determining whether there is a criminal probe to be had or not. It will be a long fall. Lets talk more about it, chuck. Thanks. Donald trump says the controversy over Hillary Clintons emails looks like watergate on steroids. But the question a lot of people are asking is could she or anyone else actually Face Criminal Charges . We asked our justice correspondent Pete Williams to take a closer look. Reporter its an issue that wont go away with a federal inquiry and members of Congress Demanding answers. Whats the fbi investigating . Federal agents are looking at whether classified information was compromised. They got that assignment after intelligence officials said some emails publicly released from her private server contained classified information like this one sent to her in november of 2012 about possible arrests in benghazi redacted in part before it was released or this one sent by her close aide houma abedin on deteriorating conditions in benghazi. Mrs. Clinton says she didnt think any of those emails were classified. I did not send classified material, and i did not receive any material that was marked or designated classified, which is the way you know whether something is. Reporter but could she be charged with a crime . Could it be like the case against former general david petrae petraeus . He pleaded guilty to mishandling classified information. Clinton supporters say that was different. You had someone who knew he was holding on to classified information, admitted on tape that he knew the information was classified, and then took it and turned it over to someone who was not authorized to view that information. Reporter but a former Republican Attorney general says mrs. Clinton could be charged just as petraeus was for keeping classified material where it shouldnt be. The place in his case was his home. In her case its her private email server. So the question then becomes whether she was the o who caused it to be done and whether she knew that the information on there was classified. Reporter could others be charged with a crime . Legal experts say that would take proof they knew they were putting classified material intoer unclassified server or were grossly negligent in doing it. Faced with more email questions today, her Campaign Said nothing that has come to light suggests she did anything improper. Pete williams, nbc news, washington. A stunning admission today from the man whose life story and struggle with his weight the country came to know was the longtime face of subway. Prosecutors say there was a dark side to the companys now former pitchman, jared fogle, who will plead guilty to zurk charges including engaging in Sexual Conduct with minors. Nbcs Kevin Tibbles reports. Im jared the subway guy. Reporter today the man known to millions as the former face of the Subway Restaurant chain pleaded to child pornography and sex with minors charges and now awaits sentencing. This is about using wealth, status, and secrecy to illegally exploit children. Reporter 37 jared fogle, a father of two, faces between 5 and 12 years behind bars. His lawyer spoke on the steps of the courthouse. He expects to get well. He expects to continue to make amends to those people whose lives he has affected. Reporter a month ago police raided fogles suburban indianapolis home, seizing phones, laptops, and computers the Authorities Say contained tens of thousands of messages, images, and videos of child pornography, some made with hidden cameras. Court documents say fogle got some images from the former director of fogles nonprofit, the jared foundation, established to teach kids about nutrition. And prosecutors say fogle on more than one occasion traveled to new york, where he had sex with minors. Fame and fortune will not protect you from attacking those most vulnerable in our communities. Reporter for 15 years jared sold sandwiches, saying hed lost more than 200 pounds eating at subway. The company suspended its relationship with him when the investigation was announced. And today tweeted jared fogles actions are inexcusable and do not represent our brands values. His family also released a statement saying they are shocked and profoundly disappointed and very concerned for the wellbeing of those affected by his conduct. This is not about them as people but about others who chose to exploit them. So theyre going to have a rough road ahead of them. Reporter as part of the plea deal something unusual. Fogle will now pay 100,000 to each of his 14 victims. 1. 4 million. Meanwhile, his wife has announced that she is seeking a divorce solely, she says, for the sake of her children. Lester . Kevin tibbles tonight. Thank you, kevin. Theres late word tonight from fire officials that no one was killed in the huge explosion that leveled a motel near seattle. Two people feared mi missing are now accounted for. But the blast is raising a lot of questions about how many other disasters like this are waiting to happen around the country. Nbcs jacob rascon has more on that. Reporter they might as well be scenes out of a war zone. Buildings in pieces. An entire neighborhood obliterated. And the house next door. But bombs didnt destroy these American Homes and businesses. Each explosion started with a gas leak. Last night in bremerton, washington. My gut told me to, and im glad it did. Reporter tonya heinz smelled gas and pulled the fire alarm at the motel 6 where she worked, likely saving dozens of guests. The blast leveled a large section of the building, shocking the neighborhood and critically injuring a gas company worker. There is an element of russian roulette. These are very, very rare. Just once in a while, though, when one of those leaks builds up underground or builds up in the basement of a building you get an accident like this. Reporter and like this one in new jersey, the home was empty when it suddenly blew up. Some of the 300,000 miles of natural gas pipeline in the u. S. Date back to the 1800s, including the pipeline that erupted underneath two apartment buildings in harlem last year, resulting in dozens of casualties. Emergency Officials Say if you smell strong gas odor, see dead vegetation areas around pipelines or hear hissing from them, get out of your home or work plaus and call your local gas company. In washington the cause is not clear, and authorities are investigating yet another pipeline accident that could have been a tragedy. Jacob rascon, nbc news. In the west the destruction is mounting as dozens of new wildfires are sparking up every day. Conditions on the ground remain explosive in this historic fire season. And tonight were taking you right into the inferno. Heres Nbc News National Correspondent miguel almaguer. Reporter in firescorched idaho, nearly 400,000 acres lost so far. The Smoke Jumpers are here. This a rare look at these elite, fearless firefighters. Dropping into rugged terrain nearly impossible to reach by land. 20,000 pounds of cargo unloading. In oregon at least 36 homes destroyed. Hundreds more threatened across the region. All weve got to do is drop a little match and poof, were all living in a tinder box. Reporter in these conditions flames can spread at 30 miles an hour. California now reporting 200 to 300 new fires a week. In Washington State 200 Army Soldiers got a crash course on fighting fires today. Resources are strained, even after david porter lost his home to a wildfire he stayed in the fight. Crews showed us just how unforgiving the conditions are. Its pretty dangerous work up here. Yeah. But its wha we train for. Reporter tonight that training put to the test. Both day and night. Miguel almaguer, nbc news, los angeles. There are new revelations tonight about inspections into Irans Nuclear program as the fight rages in congress theres word of a secret side deal by International Investigators that would essentially allow iran to use its own inspectors at a suspected nuclear site. And that is raising red flags among republican lawmakers. Our chief foreign achai Affairs CorrespondentAndrea Mitchell here with late details. An rae, what are you hearing about this . Reporter tonight, lester, nbc news has confirmed that inspectors did agree to let iran inspect itself at certain sensitive complexes parchin to clear up past activity there. But two inspectors tell me u. N. Inspectors will be on hand shufzing the iranians at every step of the way. Secretary of state kerry did brief congress in classified sessions about this arrangement first reported by the associated press. This relates to only resolving suspicions of past activity. Inspections of all future activity will be under much more rigorous rules. That said this concession to iran is likely to help opponents as they try to kilt iran deal. Lester . Andrea mitchell tonight, thank you. The brutality of isis and the ongoing war in syria have triggered an epic humanitarian crisis. The biggest wave of refugees in modern history. Desperate men, women, and children by the tens of thousands, mostly from syria, fleeing in overcrowded boats. Many drowning along the way. All hoping to reach the greek islands and safety. Our own bill neely was there as they came ashore. Reporter they land with little but their dreams. They left everything behind. Above all, war. Their suffering clear. It was so hard and we were dying. Reporter these syrians survived a crossing many did not, and theyre coming by the thousands. This is absolutely crammed. Its meant to hold 15 people. There must be 40 on this one. Wave upon wave of refugees washing up on these shores. Im very happy. Im very happy. Reporter they are all newborn refugees, part of the biggest migration in half a century, fleeing the terror group isis. They come to kill us. Women. They my sister. Reporter your sister was killed. My daughter. My daughter. I want to live. Reporter you want to live. Yes. Reporter tough men weep with relief. Another boat crashes on shore. They are risking lives to escape. You can see how low this boat is in the water, and theres actually one man whos already out in the sea clinging to the side. They begin a long journey to richer countries like germany but they face a long wait to be registered as refugees. And there have been clashes with police. Food and water is scarce. Frustration is not. If this is europe, were going back to syria. Reporter but they keep coming, fleeing afghanistan too and a new threat there. Isis, or daesh. Nowadays daesh is coming up in afghanistan and it is huge. Reporter isis. Yes, isis. Reporter greece is on the front lines of a daily exodus without end. Bill neely, nbc news, lesvos. Still ahead tonight, a new frontier in fighting cancer. Doctors targeting tumors, shrinking them in a whole new way with some pretty dramatic results, keeping patients alive. Well tell you a lot more about that. Also massive sinkholes opening up, one at the same place where a sinkhole killed a man sleeping in his bed. And a traffic nightmare today as a sinkhole suddenly shuts down a busy highway. And the wolf was huffing and puffing. Kind of like you sometimes, grandpa. Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. Symbicort may increase your risk of lung infections, osteoporosis, and some eye problems. You should tell your doctor if you have a heart condition or high Blood Pressure before taking it. Grandfather symbicort could mean a day with better breathing. Watch out, piggies child giggles doctor symbicort. Breathe better starting within 5 minutes. Call or go online to learn more about a free prescription offer. If you cant afford your medication, astrazeneca may be able to help. Try phillips fiber good gummies plus energy support. Its a new fiber supplement that helps support regularity and includes b vitamins to help convert food to energy. Mmmmm, these are good nice work, phillips the tasty side of fiber, from phillips. Every time you take advil youre taking the medicine doctors recommend most for joint pain. More than the medicine in aleve or tylenol. The medicine in advil is the number one doctor recommendation for joint pain. Relief doesnt get any better than this. Advil toenail fungus . Seriously . Smash it with Jublia Jublia is a prescription medicine proven to treat toenail fungus. Use jublia as instructed by your doctor. Look at the footwork most common side effects include ingrown toenail, application site redness, itching, swelling, burning or stinging, blisters, and pain. Smash it make the call and ask your doctor if jublia is right for you. New larger size now available. There is good theres good news tonight in the battle against cancer. Its a whole new approach to treatment. A potential breakthrough thats showing a lot of promise in reducing the size of tumors in some patients when traditional chemotherapy just isnt working. Nbcs Anne Thompson has the details. Reporter music is marianne anselmos profession. Love and refuge from cancer. The 59yearold jazz vocalist has a brain cancer that kills most people in a year. But shes still singing nearly two years after her diagnosis because of a novel approach to treating cancers by their genetic mutation instead of where they start in the body. I was really putting my life in their hands. Reporter it meant taking a drug used for melanoma, and this is the result. Everything you see in white here is her tumor. And then over here you can see now nearly a year and a half later that white tumor is completely gone. So theres no cancer . You cant see any here. No evidence of a tumor at all. Youre kidding. Yeah. Really. No, its true. A message dr. Hyman gave marianne and her husband joe. Nothing. The reporter marianne is part of a new kind of Clinical Trial called the basket study, where thousands of patients whose cancers have the same type of gene mutation are grouped together and treated with the same therapy even though they have different types of cancer such as lung, brain, or colon. With this type of approach were starting to see responses in patients that weve never seen before with the use of traditional chemotherapy. Reporter in this trial using the melanoma drug, lung cancer and two rare cancer tumors were significantly reduced. But it did not work as well on colorectal cancer. There are caveats. It doesnt work for everyone. And there can be side effects. But for marianne and other Cancer Patients its a Second Chance at a future. Okay, babe. Reporter Anne Thompson, nbc news, new york. Up next, disturbing new fallout from that massive deadly blast in china. With my moderate to severe ulcerative colitis, the possibility of a flare was almost always on my mind. Thinking about what to avoid, where to go. And how to deal with my uc. To me, that was normal. Until i talked to my doctor. She told me that humira helps people like me get uc under control and keep it under control when certain medications havent worked well enough. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers, including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment, get tested for tb. Tell your doctor if youve been to areas where certain fungal infections are common, and if youve had tb, hepatitis b, are prone to infections, or have flulike symptoms or sores. Dont start humira if you have an infection. Raise your expectations. Ask your gastroenterologist about humira. With humira, control is possible. So, what did you guys they think of the test drive . I love the jetta. But what about a deal . Terry, stop its quite alright. You know what . We want to make a deal with you. Were twins, so could you give us two for the price of one . Come on, give us a deal. Look at how old i am. Do you come here often . He works here, terry you work here, right . Yes. Ok lets get to the point. Were going to take the deal. Get a 1000 volkswagen reward card on select 2015 jetta models. Or lease a 2015 jetta s for 139 a month after a 1000 volkswagen bonus. Ugh heartburn no one burns on my watch try alkaseltzer heartburn reliefchews. They work fast and dont taste chalky. Mmm. Amazing. I have heartburn. Alkaseltzer heartburn reliefchews. Enjoy the relief. The danger may not be over from these massive explosions a week ago. A mysterious white foam has appeared in the streets as rain fell near the blast site in china, sparking fears that residual chemicals from the explosions may be causing it. Some people who came into contact with the foam or rain reportedly experienced burning sensations on their skin and eyes. In florida a massive sinkhole has reopened at the very same mass a man was killed in 2013 when the ground swallowed up his home. Heavy rains are likely to blame. And near concord, New Hampshire a sinkhole opened right in the middle of a highway cat creating a traffic nightmare when crews shut down that part of the interstate. She was barbara gordon, the Police Commissioners daughter by day and crimefighting batgirl by night. Yvonne craig has died. She rose to fame as a tough female sidekick to batman and robin on the 1960s hit tv series. She passed away at her home in los angeles of complications from breast cancer. Yvonne craig was 78 years old. When we come back, under the sea. A natural wonder thats disappearing before our eyes. I called for help as soon as i saw her. I found her wandering miles from home. When the phone rang at 5am, i knew it was about mom. I see how hard its been on her at work and i want to help. For the 5 million americans living with alzheimers, and millions more who feel its effects. Lets walk together to make an even bigger impact and end alzheimers for good. Find your walk near you at alz. Org walk. 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Were going to end tonight with an incredible journey under the sea which could be the closest many of us come to seeing an exotic underwater site facing a threat like never before. Heres nbcs kerry sanders. Reporter hidden below the surface of the worlds oceans, spectacular gardens of coral. And now documenting each stunning inch from australia to here in hawaii and beyond, divers with a oneofakind underwater camera, snapping a 360 degree picture every three seconds. The team from xl catland partnered with google, so far stitching together more than 750,000 photos, creating a google street view of the worlds coral reefs. We joined the team off the eastern coast of oahu, where corals, which may look like rocks, are actually living animals facing what scientists fear could be extinction from whats called coral bleaching. This area here, it looks like its got snow on it. Yes, thats the bleached coral. And as you can see, this is the healthy coral. Reporter bleached corals turn white when they die. Now because of enino and warming conditions in the pacific ocean, waters that should be in the high 70s are 84 degrees and could reach an unprecedented 90 degrees, killing even more of the corals. Youre talking an event similar to the rainforests of the world turning white over a very short period of time. Everyone will be jumping up and taking notice, wondering what the hell is happening. But this is happening underwater. On a massive scale. Reporter this new google view of the reef will be used to compare the corals health in five years. Today its online. A virtual dive of what has been out of sight, out of mind, until now. Kerry sanders, nbc news, oahu. That will do it for us on this wednesday night. Im lester holt. For all of us at nbc news, thank you for watching and good night. I was about to head to thecheck. Bank, but out of nowhere it just started to rain. Like really rain. [clap of thunder] i did not want to go out. [clap of thunder] but then i was like duh, just use your phone. Mobiledeposittechnothingy to the rescue. Im rayna. And i bank human at td bank. Jared fogle expects to go to prison. Im jared the subway guy. An alarming fall from grace. Jared gets set to plead guilt tow child sex charges. Im