Discovery. Captioning sponsored by cbs this is the cbs evening news with scott pelley. Reporting tonight from the Democratic National convention in philadelphia. Just hours after an address to this convention by mothers who lost children to violence, some at the hands of police, criminal charges were dropped in baltimore today in the death of freddie gray. Grays neck was mysteriously not involved in an accident. Riots in baltimore calmed after Six Police Officers were charged, but now after four trials and no convictions, the prosecutor conceded today it would be impossible to convict any of the cops. Jeff pegues is in baltimore. Reporter baltimores top prosecutor Marilyn Mosby had a small group of supporters behind her, and a divided city beyond, for those that believe im antipolice, its simply not the case. Im antipolice brutality, and i need not reporter she was unapologet and i can at times defiant. For over a year, my office has been forced to remain silent in all six of the cases pertaining to and surrounding the death of freddie gray. Despite being physically and professionally threatened, mocked, ridiculed, harassed, and even reporter freddie gray died in 2015 after he was arrested and put in the back of a police van. He was handcuffed, shackled, but not seat belted in. He suffered a spinal cord injury while being transported to jail. What followed was several days of unrest and violence. 76 officers were charged in connection with his death. The first trial ended in a hung jury. Three others trials were heard by a judge who found the was not inherently criminal construct. Mosby acknowledged that the next trial would likely lead to the same outcome. The judge, who is within his right, has made it clear that he doesnt agree with the states theory of the case. Reporter mosby argued today that the case reflects the reality of the justice system. Unlike with other cases wrrkz prosecutors work closely with the police to investigate what actually occurred, what we realized very early on in this investigating police, whether theyre friends or merely their colleagues, was problematic. Reporter in a statement, baltimores Police Commissioner kevin davis called the investigation transparent, and says it was conducted by over 30 ethical, experienced, and talented detectives. Gene ryan is the president of the fraternal order of police in baltimore. The states attorney could notticism simply could not accept the evidence that was the comment made today about our officers by miss mosby were outrageous and uncalled for, and simply not true. Reporter mosby says she regrets not being able to hold anyone accountable. We conot believe that freddie gray killed himself. Reporter four of the six officers have gone back to work. Scott, there is an administrative review hanging over all of the officers that pelley jeff pegues, thanks. Today, a federal judge ruled that John Hinckley jr. , the man who shot president ronald reagan, will be allowed to leave a Mental Hospital to live with his mother. Hinckley is now 61, and the judge said his Mental Health has improved dramatically. Now more with chip reid. Reporter on march 30, 1981, John Hinckley attempted to hilton hotel. gunfire reporter he hospital, reagan told the surgeons he hoped they were republicans and told wife nancy, honey, i forgot to duck. In fact, though, it was far from funny. The bullet stopped less than an inch from his heart. Three others were also wounded, including press secretary jim brady who sunday a severe brain injury. Hinckley said he wanted to kill the president to impress Actress Jodie Foster after seeing her in the movie taxi hinckley was found not guilty by reason of insanity, and for 35 years, hes lived under Court Supervision at a Mental Hospital in washington, d. C. The court has allowed hinckley frequent visits to the home of his 90yearold mother in williamsburg, virginia. And today, federal judge Paul Friedman ruled that hinckley will f se to live with her full time. The judge found that hinckleys Mental Illness is in remission, and that he has shown no signs thinking or any violent tendencies. Tim mccarthy, police chief of orland, illinois, is the former secret Service Agent who might have saved reaganys life that day by taking a bullet himselfs. Im very concerned and i hope theyre right. Reagans son michael said, my father did more than say the lords prayer. He lived it in forgiving John Hinckley jr. Maybe we should do the same. This hospital some time in early august, but, scott, the judge imposed a long list of conditions, including no weapons, no talking to the media, and no skipping out on his Mental Health care appointments and if he does miss any of those conditions he could end up right back here. Pelley chip reid, thank you. Well, donald trump is doing all he can to steal the spotlight from the democrats during their convention. He called a News Conference in miami today, and Major Garrett i hope youre able to find the 30,000 emails that are missing. I think you will probably be reward mightily by our press. Reporter thats a reference to emails sent and received from Hillary Clintons nonsecurity, unauthorized private server when she was secretary of state. F. B. I. Director james comey described her conduct as extremely careless but did not support filing criminal charges. Trumps call for russian intelligence officials suspect moscow of hacking more than 19,000 emails from the Democratic National committee. Emails showing internal discussions critical of Bernie Sanderses and supportive of clinton. Moments after trump spoke, his running mate, mike pence, promised serious consequences if russia interfered in the election. This appeared to contradict trumps call for russia cyber tampering. Intensifying the drama, a spokesman for House Speaker paul that should stay out of american politics. U. S. Officials cant any give a motive for the hack but the clinton camp suggested it might have been done to help trump, a theory the g. O. P. Nominee swiftly rejected. I have nothing to do with russia. What do i have to get involved with putin for . I have nothing to do with putin. I have never spoken to him. Reporter in 2014 trump said he had spoken with putin and said putin could not have been nicer and then trump said this during a g. O. P. Debate last fall and i got to know him very well because we were both on 60 minutes. We were stablemates and we did very well that night. Reporter trump scoffed at the controversy as he tried to demonstrate political muscle in the home town of Vice President joe biden here in scranton. Scott, in the county, president ial turnout in the primary favored democrats two to one. Trump loyalists started lining up seven hours early for a trump 5,000. Pelley major, donald trump also said in that News Conference that Hillary Clintons running mate tim kaine had done a poor job for the state of new jersey. Kaine, of course, represents virginia. Running mate im sorry, now we have the reaction to trump from the clinton campaign, and nancy cordes has that. She does not view this as a political issue. She views this as a National Security issue. Reporter clinton senior slammed trumps proposal to putin saying in a statement, this, has to be the first time a major president ial candidate has actively encouraged a foreign power to conduct espionage against his political opponent. Test, one, two. Test, one, two. Reporter trumps Foreign Policy views are sure to come up tonight when virginia senator tim kaine takes the convention stage. Clintons new running mate tested out some of his country teeks at a delegate breakfast. You cant stop terrorist intele, and youre not going to share inteleif you shred all the alliances that donald trump is proposing to shred. Reporter clinton formally captured the nomination last night, celebrating with the crowd via satellite. And i cant believe we just put the biggest crack in that Glass Ceiling yet. Reporter it was an emotional milestone for delegates of her generation, like lana moretsky. Were not done yet but its reachable. Reporter and for younger women like jamian smith. I already admired then its like she did all of this on top of just being a great wife, a great mother, a great human being. Reporter that was just the message clintons husband had hoped to impart way deeply personal speech that detailed their courtship. In the spring of 1971, i met a girl. I was still in awe after more than four years of being around her at how smart and strong and i married my best friend. Reporter he said voters should trust his description of his wife, not the g. O. P. s. One is real. The other is made up. applause you just have to decide which is which, my fellow americans. Reporter president obama will offer his own testimonial here tonight, and according to excerpts of the speech that have just been releasede even in the middle of crisis, his former secretary of state listens to people and keeps her cool and treats everybody with respect. He will also say, scott, that clinton never gives up. Pelley nancy, one of the speakers today will be michael bloomberg, the former mayor of new york, who left the Democratic Party 16 years ago to become an independent. What are you expecting . Reporter thats right. He even considered running for president himself as an independent this year but were told that he wanted to come here and speak because hes has grave york billionaire, and he will argue tonight that a Trump Presidency would be devastating, scott, for the economy. Pelley nancy cordes on the floor for us. Nancy, thank you. Well, Hillary Clintons running mate, senator tim kaine of virginia,edly feature tonight, and he dropped by to test the stage earlier today. In their first and only interview, clinton and kaine sat down with 60 minutes. Senator what, did you tell her you were good at . You know, ive been a councilman, a mayor. Ive been a Lieutenant Governor and governor, and now in the the senate serve on the Armed Services and Foreign Relations commit so im a utility player. Ive done a lot of things and ive seen government from ever perspective. Ive seen things that work and ive seen things that dont. I want to do everything i can to make sure, a we win and that the presidency of the clinton is fantastic. I just have to add that he plays a mean harmonica. Pelley ive heard that. Pelley what did you tell her youre not so good at . Wow, thats a good question. Not so good at. So i dont think ive had one day of my life when i get to the end of the day and felt i got everyone done i wanted to get done that day. Theres always this sense of there could have been more, it could have been better tcoosk faster. I dont consider myself driven by i do consider myself perpetually satissified. If you dont have a sense of discontent youre not going to feel towrnlg wake up tomorrow and do better. Maybe my dissatisfaction at the end of the day is one of the reasons i get up early ready to do more. Pelley tim kaine will be speaking during our primetime Convention Coverage which begins at 10 00, 9 00 central. Ill be joined by norah odonnell, charlie rose, gayle king, and john dickerson. The speakers include president obama and Vice President ial nominee tim kaine, as we mr. Obama has chosen a location for his president ial library. Cbs news has confirmed that it will be built in the jackson park section of chicago. That is just east of the university of chicago where the president once taught law. One day after a french priest was murdered by two men who pledged allegiance to isis, pope francis said today, the world is at war, and we dont have to during a flight to poland, francis told reporters he was not speaking of a religious war. Religions dont want war, he said. The others want war. Coming up next on the cbs evening news from philadelphia, Serious Health risks from dietary supplements, and the ice bucket challenge has led to an for lower back pain sufferers, the search for relief often leads. Here. Here. Or here. Today, theres a new option. Introducing drugfree aleve direct therapy. A tens device with high intensity power that uses technology once only available in doctors offices. Its wireless remote lets you control the intensity. And helps you get back to things like. This. This. Or this. And back to being yourself. Im terrible at golf. He is. 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Are a 40billionayear industry in the united states, but a new report finds serious risks. Reporter 43yearold tattoo artist bobby cimorelli and his wife, margret, have struggled to get pregnant. Cimorelli decided to try supplements. I was really bloated. My Blood Pressure was, like, really high. Reporter within weeks, cimorelli wound up in the emergency room. Doctors said the supplements were the likely culprit. I had no idea they were side effects. Reporter cimorelli is one of the roughly 200 million americans taking dietary supplements. Today, Consumer Reports identified 15 commonly used supplement ingredients that could be potentially harmful. Kidney and liver problems. Green tea extract powder for weight loss may elevate Blood Pressure. And kava may exacerbate depression. One area of concern is supplements do not undergo the rigorous scrutiny as prescription drugs. About pieter cohen of harvard medical school. The problem is supplements look just like these drugs on store shelves, but get a supplement on store shelves is nothing compared to what it takes to sell aspirin or tylenol. Reporter dr. Aida vega is an intern icht at mount sinai hospital. She says doctors and patients often dont discuss supplements which can lead to problems. How important is it for physicians to ask patients about supplement uses . The most important part of this is to understand why theyre taking it because many times, if you understand why theyre taking tyou can steer them in the proper direction. Industry says overwhelmingly supplements are safe and play a valuable role. But, scott, doctors worry lax regulation and enforcement means products could be contaminated, mace labeled or interact in dangerous ways with prescription medications. Pelley dr. Tara narula for us tonight. Thank you, doctor. Coming up, a Hawaiian Island grows with the flow. Isnt it time to let the real you shine through . 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John landers, a neurologist at the university of massachusetts, runs a lab trying to find genes linked to he got 1. 5 million from the challenge. Does a million, a million and a half bucks really make a difference . You know, not to sound cliche, but, frankly, every bit counts. Genetics, unfortunately, is one of those areas that is on the more expensive side. Reporter the ice bucket challenge money led to dr. Landerce lab isolating a gene which researchers are finding qies promising for more than 17 Million People took the challenge, and to the the researchers on the front lines in the battle against a. L. S. , it wasnt just a way for them to feel good about themselves. The financing, the money that was raised was just an amazing level. Reporter it was a way to make a real difference. Jim axelrod, cbs news, new york. Pelley and thats the cbs evening news from philadelphia. Our primetimeer central time. Ill be joined by norah odonnell, charlie rose, gayle king, and john dickerson. Well be back and see you then. Captioning sponsored by cbs captioned by Media Access Group at wgbh wheel. Of. Fortune [ caribbean music playing ] [ applause ] ladies and gentlemen, here are the stars of americas game pat sajak and vanna white applause ] thank you, jim. Thanks, everybody. How are you all . Thank you. Appreciate that. Its time for you to move to the puzzle board. Okay. See you later. Hello all right, there they go. Each team will have one of those things, and they do. Theyre very wellbehaved. First toss up what are you doing . Is the category