That was keeping that family together. Captioning sponsored by cbs this is the cbs evening news with scott pelley. Reporting tonight from the Democratic National convention in philadelphia. Pelley tonight, Hillary Clinton takes the podium here to accept the daiment nomination for president , in an election that may very well come down to trust. In a cbs news poll taken after last weeks Republican Convention, 56 of voters said donald trump is not honest and trustworthy, but even more, 67 , said that of clinton. Tonight, clinton will try to get her numbers down, or failing that, trumps up. Heres nancy cordes. Reporter president obama said last night hes ready toes pass the baton. Clintons task tonight is to convince americans they can trust her to carry it. So lets talk about trust. Reporter her running mate, tim kaine, did his part, using the word trust nine times. As hes serving our nation abroad, i trust Hillary Clinton with our sons life. cheers and applause you know who i dont trust . Hmmm. I wonder. Reporter the virginia senator urged voters not to fall for one of trumps favorite frailzs. Believe me, were going to destroy isis so fast, believe me. Theres nothing suspicious in my tax returns. Believe me. cheers and applause folks, you cannot believe one word that comes out of Donald Trumps mouth. Not one word. Reporter and yet, the latest cbs news poll found clintons numbers are worse than trumps. Two in three americans consider her dishonest, the result, in part, of a relentless republican focus on the benghazi attacks calling it an attack is like saying the sky is blue. Of course it was an attack. Reporter and her own shifting answers on her use of a private email server. There are no classified materials. Reporter president obama touched on the problem last night. Hillarys got her share of critics. She has been character turd by the right, and some on the left. She has been accused of everything you can imagine, and some things that you cannot. But she knows thats what happens when youre under a microscope for 40 years. Reporter put trump under a microscope, he said, and youll find something far worse a homegrown demagogue. Our power doesnt come from some selfdeclared savior promising he alone can restore order as long as we do things his way. We dont look to be ruled. cheers and applause reporter Vice President joe biden said trump lacks empathy. Hes trying to tell us he cares about the middle class. Give me a break. Thats a bunch of malarkey. Reporter clintons aides tell me she will not try to be some kind of sunny counterpoint to trumps gloomier outlook last week. They say she will acknowledge that the nation has serious systemic problems. The difference, they say, is that she will also offer specific solutions to try to deal with those problems in a speech, scott, that was still being tweaked today. Pelley nancy cordes, thanks. Well, trumps speech at his convention was short on specific solutions. For example, he said that crime will end, but he didnt say how. The theme of the Trump Campaign today was damage control, and heres Major Garrett. Reporter donald trump spent the day embroiled in a controversy of his own making. This was the g. O. P. Nominee yesterday. Russia, if youre listening, i hope youre able to find the 30,000 emailses that are missing. Reporter those emails arent exactly missing. They were deleted from the private email server Hillary Clinton used while secretary of state. Trumps call for russian interference comes after a second email scandal. Hackers penetrated the servers of the d. N. C. , leading to the release of 19,000 emails. U. S. Officials suspect russia is behind it. Trump later said his comments were a joke. Of course, im being sarcastic, and they dont even know, frankly, if its russia. They have no idea if its russia, if its china, if its somebody else. Who knows who it is . Reporter Rudy Giuliani is a top trump surrogate and former president ial candidate. Donald trump made a mistake and he corrected it. Reporter and thats part of his evolution as a nominee. Part ofs his evolution as a nominee and part of the process of being so transparent and so open. Reporter trumps comments drew a harsh rebuke at last nights democratic convention. Leon panetta accused trump of inciting foreign eps nawnl. As someone who was responsible for protecting our nation from cyber attacks, it is inconceivable to me that any president ial candidate would be that irresponsible. Reporter meanwhile, trump tried to suppress viewership tonight when Hillary Clinton speaks. In a funds raising email he warned supporters would be, lied to, belittled, and attacked for their beliefs. Trump may have noticed tv ratings for the democrats are beating his g. O. P. Convention, defying his prediction last friday. Nobodys going to watch this next convention. Reporter trump said today this convention describes an america that does not exist, one of full employment, border security, and success against isis. For context, scott, trump also said putin is a better leader than president obama, fighting words to be sure on this convention floor. Pelley Major Garrett for us. Major, thank you. Well, for many young americans, this is their first election, and we wondered what theyre thinking. So Demarco Morgan talked to three Pennsylvania College students, erin duffy, breeon buchanan, and tyra woods, all of them undecided. Its a tough situation because were new voters, so we want to make the right decision for our future. Its kind of like we dont know who to vote for. Like, i know a lot of my friends feel the same way. Theres really no good candidate. This is my first time voting so what weve seen so far has been kind of like a spectacle. But we dont really know who toes choose. Reporter and what are you looking for . Im looking for somebody who is actually going to make a change in our country, and even if its the smallest thing. Reporter what about the conventions . Im sure you guys paid attention to the Republican Convention in cleveland. Our convention occurs at a moment of crisis for our nation the attacks on our police and the terrorism of our cities threaten our very way of life. I think he was the only one that actuallycracied that we are in a crisis. I think that was very brave of him. In a sense. I dont think hes handling it the right way. Hes just being his aggressive self. And i dont want to be afraid because thats how i feel whenever i feel like donald trump is speaking, afraid of if he were to get in office what would it be like . What would the next four years be about . Dont let anyone ever tell you that this country isnt great, that somehow we need to make it great again because this right now is the greatest country on earth. cheers and applause . They saw what was happening and today in the news and everything, even with this election, like, its a representation of is america really great . We were the melting pot at one point. I think that we need to go back to that and we need to be a little more sensitive about different cultures and different ways of life. Its like we take 10 steps forward and two steps back. So where is the change going to come in . What are we doing to actually fix it . What are they going to do by november that will moat mate millennials to vote, to get them ready and excited . Whats going to push us . Because right now, theres a lot of indifference. If you dont vote, dont complain when you dont like something thats happening because you didnt vote. Reporter scott, that recent cbs news poll taken right after the g. O. P. Convention found seven pfers voters nationwide are still undecided. Pelley Demarco Morgan speaking to we, the people. Demarco, thanks. Well, american women didnt win the right to vote until 1920. By then, freed slaves had been voting for 50 years. What does tonight mean to Hillary Clinton . We asked her in her only interview with running mate tim kaine for 6 60 minutes. What will be accomplished if you are elected the first woman president to the United States . I think it would be a great moment for our country because every little boy and every little girl should be given the chance to go as far as his or her hard work and talent might take them. I see it in the eyes of little girls who come to my events. They were so excited, and theyre so proud because maybe they just discovered we havent had any girl president s. A lot of them go to restaurants where there are placemats and all of the president s are men. And then they start asking questions. I just think it will be another another step on our journey as a nation, making it clear that this country is open to everyone. Our diversity is a strength, not a basis for condemnation and despair, and to accept that nomination, ill be thinking about all the women who came before, the suffragettes, the women who knocked their heads against all kind of barriers and broke through, and everything from, you know, space to politics. And i hope that it gives other women and girls the feeling that whatever their dreams might be, they can achieve them in this country. Pelley cbs news live coverage of Hillary Clintons acceptance speech begins at 10 00 eastern, 9 00 central. Well be joined right here by norah odonnell, charlie rose, gayle king, john dickerson, and bob schieffer. In another important story tonight, there is now growing evidence that mosquitos in south florida are spreading the zika virus, so today the food and Drug Administration asked blood banks in two counties to stop accepting donations. We have more now from david begnaud. The federal request to stop all Blood Donations is meant to safeguard the blood supply until blood banks are equipped to test every donation for zika. There is increasing concern tonight that four new zika cases could be the first transmitted by local mosquitos in the continental u. S. Two cases are in miamidade county. The two others are in broward county. Officials do not believe they are travel related. On tuesday, Health Inspectors began visiting residents in the neighborhoods where the four new zika patients live and work. They are collecting urine samples to test for any new cases. Dr. Aileen marty, an Infectious Disease doctor with Florida International university, was one of those door knock. Most people were understanding, but a few were a little bit you know, its unusual to have someone knocking on your door with a cooler full of urine samples. Reporter local mosquitocontrol workers are intensifying their efforts, targets those same neighborhoods to eradicate mosquitoes and their breeding grounds. Release the mosquitos, josh. Oh, my god, theyre coming. Reporter within five seconds one mosquito was trying to get to your arm. What does this show . This shows the power of mosquitos sense of smell and how theyre so atuned to human odor. Reporter dr. Matthew degennaro studies mosquito behavior and geneticking at f. I. U. How does deet actually work . Mosquitos smell deet, and then they avoid humans. But even the few that still can find you, if they land on you, theyll taste it on your skin, and theyll be like yuck. And they wont bite you and theyll go away. Reporter there is no vaccine, and theres no treatment for zika. Tonight, people in south florida are being told use that deet repellent. Its the most effective tool yet. Scott, starting tomorrow, the largest blood bank in the southeastern u. S. Will test every Blood Donation for zika. Pelley well be following this closely. David, thank you very much. Coming up next on the cbs evening news from philadelphia, why airlines are dropping fares. And later, a Major Development in the murder of washington intern chandry levy. To win an olympic medal, i tell them, you already know. The medals youve earned are all around you. Your bronze. Your silver. Your gold. And Liberty Mutual insures them all. Liberty mutual is proud to insure every team usa medal won in rio, just like we protect the medals youve earned in life. Liberty stands with you. Liberty mutual insurance. Pelley boeing says that it may stop producing the iconic 747, the jumbo jet that helped the jet set take off in the 1970s. The four engines burn too much fuel, and airlines are struggling to fill the planes. Transportation correspondent kris van cleave says thats just one reason that airfares are coming down. Reporter planes packed with summer travelers should be a sign of success for airlines, but new data shows the average domestic airfare for the first part of 2016 dropped nearly 8 over last year, falling to the lowest point since 2010. Airlines, especially ultralowfare carriers, spirit, frontier, and allegiant, have grown aggressively, expanding capacity, just as terror attacks in europe, Economic Uncertainty in britain, a strong dollar, and increased competition are cutting into lucrative routes for united, american, delta, and southwest. I think youll see airlines have lower profits than they would have expected for the back half of the year and for 2017. Reporter josh marks is an airline consultant. The major carriers are seeing a lot of competition on routes, particularly leisure markets where they had a significant market share before. Weve now seen growth by ultralowcost carriers that are really offering rockbottom fares. Reporter on average, vacation sphraers dropped 17 since last july. L. A. To paris round trip went for as much as 1500. Now it can be had for less than 400. New york to hong kong was 9how. Now its under 500. George hobica runs airfarewatchdog, a web site tracking prices. I think for domestic travel, these are some of the best airfares weve seen in five years. For International Travel on some routes, the best airfares weve ever seen. Reporter the Airline Business is notoriously boom or bust. Last year, it was record profits. Scott, now, the airlines are lowering their expectations for the rest of this year but still believe theyll finish it profitable. Pelley kris van cleave, thanks. Still ahead, a mystery in the sky, a mystery no more. Ahhh the sweet taste of victory prilosec otc. One pill each morning. 24 hours. Zero heartburn. Grain free pet food committed to truth on the label. L when we say real meat is the first ingredient, it is number one. And we leave out corn, wheat and soy. For your pet, we go beyond. Youthats why you drink ensure. Sidelined. 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. Itsand your doctor at yoto maintain your health. A because in 5 days, 10 hours and 2 minutes you are going to be 67. And on that day you will walk into a room where 15 people will be waiting. 12 behind the sofa, 2 behind the table and 1 and a half behind a curtain. Family surprise but only one of them will make a life long dream come true. Great things are ahead of you when your health is ready for them. At humana, we can help you with a personalized plan for your health for years to come. Pelley today, federal prosecutors said they will not retry the man convicted of murdering washington intern chandry levy. Ingmar guandiques conviction was overturned after doubts were raised about a key witness. Levys disappearance while jogging in 200worn created a National Sensation when it was learned she had been having an affair with a congressman. Baton rouge held a Memorial Service today for the three Law Enforcement officers who were ambushed and murdered this month. Montrell jackson, brad garafola, and matthew gerald. Attorney general Loretta Lynch told mourners the city is united by collective heartache. Vice President Biden said of the officers and their families, we owe you. David bald eagle lived up to the highflying spirit of his native american name. He was born in a tepee in south dakota in 1919. He was a u. S. Army paratrooper, shot four times in the dday invasion of normandy. Bald eagle was a tribal chief, a champion dancer, a race car driver, and a semipro baseball player. He was in Kevin Costner oscar winning dances with wolves, and also made pictures with gable, john wayne, and marilyn monroe. David bald eagle died on friday. He was 97. A mysterious streak of light lit up social media in the west last night. It was spotted in nevada, utah, and california. Some thought it was a meteor. U. S. Strategic command says today it was the remnants of a Chinese Rocket that blasted off more than a month ago and burned up as it reentered the atmosphere. And well be right back. Is it keeps the food out. For me before those little pieces would get in between my dentures and my gum and it was uncomfortable. Just a few dabs is clinically proven to seal out more food particles. Super poligrip is part of my life now. Seconds can mean the difference between life and death. For partners in health, time is life. We have 18,000 people around the world. The microsoft cloud helps our entire staff stay connected and Work Together in real time to help those that need it. The ability to collaborate changes how we work. What we do together changes how we live. If you have moderate to severe plaque psoriasis, isnt it time to let the real you shine through . Introducing Otezla Apremilast . Otezla is not an injection or a cream. Its a pill that treats plaque psoriasis differently. With otezla, 75 clearer skin is achievable after just 4 months, with reduced redness, thickness, and scaliness of plaques. And the otezla prescribing information has no requirement for routine lab monitoring. Dont take otezla if you are allergic to any of its ingredients. Otezla may increase the risk of depression. Tell your docto