A 17yearold from the bronx who died last friday. He is believed to be the youngest of at least 24 who have died in 20 states. More than 1,000 illnesses from vaping have been reported nationwide. Nationwide. Now, a cbs news investigation into zantac and its generic versions. The nations three largest pharmacy chains stopped selling the heartburn drug used by millions after the f. D. A. Warned this month that it may contain a potentially dangerous impurity. Our dr. Jon lapook reports zantacs problems may not just be an impurity but something much more serious. We take the entire tablet, just as a patient would, and we dissolve it into the solvent. Reporter at this connecticut lab, called valisure, researchers test drugs from its own Online Pharmacy to check for purity and quality. Last spring, they decided to analyze a few heartburn drugs to see if they contained a chemical called m. D. M. A. , a probable last year, that same chemical had led to recalls of some Blood Pressure pills. So, were going to crush this. Reporter okay. One medication stood out zantac and its generic version, ranitidine. It had levels of m. D. M. A. Higher than considered acceptable. Valisure c. E. O. David light the active ingredient in zantac appears to us to be a fundamentally unstable molecule. Reporter light reported to the f. D. A. His suspicion that the problem is not just an impurity, but what could happen to the pill inside the body. And in a variety of conditions conditions of the lab, conditions of the human body it can break down and then form the carcinogen m. D. M. A. Reporter youre saying the thitidine could be converted into m. D. M. A. Inside the body, was suggested three years ago in Research Published by william mitch, a professor at stanford university. Watested. L study, ten voluntrs m. D. M. A. Levels were more than 400 times greater than what the f. D. A. Considers acceptable. Even after adjusting for a new f. D. A. Protocol for measuring m. D. M. A. , mitch got similar result what we were hoping was that someone else would eventually pick up the results, who is in the pharmaceutical field. Reporter and did they . To my knowledge, not yet. But maybe this will spur them to. Reporter three months after valisure first alerted the f. D. A. To its findings, the Agency Issued a safety alert, saying its own testing found low levels of m. D. M. A. In ranitidine. It is now calling even those levels unacceptable. The agency told cbs news it is now investigating what happens to ranitidine inside the body after its exposed to stomach acid. What do you think happens Going Forward now . What would like to see happen . What weve been petitioning for is for the complete recall of all ranitidine products brand, doest matt m reporter zantacs maker, sanofi, told cbs news that the mitch study has limitations, that the company is working closely with the f. D. A. And while zantac is still being sold, some generic makers have issued voluntary recalls. Okay, i think the bottomline question everybody wants to know is there a link between zantac and cancer . Reporter no, but memorial sloan kettering, one of the worlds top cancer centers, has pulled ranitidine from its pharmacy shelves as it looks for any evidence that people who take it are more prone to get certain types of cancers. Now, people should know, norah, if theyre taking zantac or ranitidine, there are alternatives they should discuss with their clinician. All right. Were going to continue to follow this story very closely. Thank you, dr. Lapook. There is still much more ahead tonight in the cbs evening news. There is a twist in the murder of a key witness in the amber geyger case. Also, why Ellen Degeneres refuses to be shamed over her choice of friends. And simone biles at age 22 proves again why she may be the best gymnast ever. My lady those darn seatbelts got me all crumpled up. 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Simone biles led the way, earning a record 21st medal. Be remeered ar e bidiits us e orr and again backflip. Doubledouble reporter nailg signature moves no one has ever done in a major competition. That is biles reporter slow motion shows the skill needed to pull them off d it will now be known as the biles ii. [ cheers and applause ] to top that, biles dazzled the crowd on the balance beam, landing a doubledouble dismount, now dubbed quite simply the biles. Thats four moves now named in her honor. It finally felt good to go out there and hit a beam routine like i trained, because i feel like every time i go up to compete beam, i just, like, bomb it. So, it felt really good to nail it. She wears goat on the back of her leotard. She is the greatest of all time. Reporter olympic Gold Medalist and World Champion kurt thomas has three moves to his name. When you and you keep raising the Difficulty Level the way simone does, thats where youre just changing the sport. Reporter biles is now ng the Olympic Games in tokyo next summer. Michelle miller, cbs news, new york. Just historic. Congratulations to the whole team. Nyquil severe gives you powerful relief for your worst cold and flu symptoms, on sunday night and every night. Nyquil severe. The nightime, sniffling, sneezing, coughing, aching, stuffy head, best sleep with a cold, medicine. But we were made to move. So move more live more degree motionsense made to move. Upbeat musieverything was so fresh in the beginning. [sniff] dramatic music but that plug quickly faded. Upbeat music luckily theres febreze plug. It cleans away odors and freshens for 1200 hours. [deep inhale] breathe happy with febreze plug. Does scrubbing grease feel like a workout . Scrub less with dawn ultra its superior greasecleaning formula gets to work faster, making easy work of tough messes. Dawn takes care of tough grease, wherever it shows up. Scrub less, save more. With dawn an air force flyover today honored the service of a world war ii aviator missing for more than half a century. Major donn young was buried at Arlington National cemetery. He was killed when his b25 bomber went down in papua, new guinea, in 1943. Youngs remains were found after a yearslong search by the nephew of the planes pilot to locate the crash site and its crew. One man is in custody tonight and two others are being sought in the murder of a key witness in the trial of former Dallas Police officer amber guyger. Remember joshua brown . Well, he was shot and killed friday in what police say was a drug deal gone bad. They insist theres no connection to the guyger trial. Californias largest utility is going to extremes to prevent wildfires. Pacific gas and electricity says just after midnight, it will begin turning off the power to nearly 800,000 to prevent wires from sparking. The National WeatherService Calls fire conditions in the bay area and Northern California extreme. Now to this story americans are stressed out, and a new study finds nearly 40 of us say politics is to blame. Some say its affecting their health, others claim theyve lost sleep over the subject, and 20 say political differences have damaged a valued friendship. So, on that note, coming up next, two very famous people prove it doesnt have to be that way. Announcer this portion is finally tonight, we thought wed address kindness, civility, and politics, which dont seem to be mentioned in the same sentence much these days. It took a greeting on the gridiron between former president george w. Bush and Ellen Degeneres to bring it into sharp focus. It may not seem like a big deal for a celebrity to attend a football game, but i never leave my house, so it is a big deal. Reporter ellen and her wife, portia de rossi, were invited to sit in the private box of Dallas Cowboys owner jerry jones. Former president george w. Bush and his wife, laura, were also there. [ laughter ] but during the game, they showed a shot of george and me laughing together, and, so, people were upset. They thought, why is a gay hollywood liberal sitting next to a conservative republican president . Didnt even notice im holding the brandnew iphone 11. [ laughter ] but a lot of people were mad, t. Buheres one tweet i loved. This oerson says, ellen a have faith in america again. [ cheers and applause ] but instead of getting into the fray on social media, ellen used the moment to preach about civility. Heres the thing im friends with george bush. In fact, im friend with a lot of people who dont share the same beliefs that i have. Were all different, and i think that weve forgotten that thats okay, that were all different. When i say be kind to one another, i dont mean only the people who think the same way that you do. I mean be kind to everyone. It doesnt matter. [ cheers and applause ] thats the overnight news for this wednesday. For some of you the news continues. For others, check back later on cbs this morning. From the Broadcast Center in n york city, im norah odonnell. P shall announcer this is the cbs overnight news. Warm welcome to the overnight news. Im errol barnett. President donald trump has declared political war on the congressional impeachment inquiry, calling it a kangaroo court. The white house has barred a diplomat from speaking to investigators and the president signalled he will stone wall any effort to speak to witnesses or to subpoena documents. Nancy cordes brings us the latest. Lyer said d. C. From his post in brussels. House intelligence chairman adam shif. The failure to produce this witness we consider yet additional strong evidence of obstruction of the constitutional functions of congress. Reporter President Trump appeared to take responsibility for the lastminute move, tweeting, i would love to send ambassador sondland to testify. But unfortunately, he would be testifying before a totally compromised kangaroo court. What we see in this impeachment is a kangaroo court. Reporter a group of House Republicans backed the president s move. The administration is blocking a key interview. Doesnt that imply that there is something theyre trying to hide . No. Its based on the unfair and partisan process mr. Schiff has been running. Reporter sondland is a hotel mogul and trump megadonor. Text exchanges this summer show sondland pushing for an unequivocal promise for election medding and burisma. Mr. Trump really wants the deliverable, sondland wrote. When a fellow diplomat argued, its crazy to withhold Security Assistance for help with a political campaign, sondland responded four hours later, the president has been crystal clear. No quid pro quos of any kind. A source tells cbs news sondland called the white house during that fourhour gap. Democrats say sondland has more texts and emails stored on a personal device that they now plan to subpoena. She has argued that she is under no legal or legislative obligation to hold that vote and shes not going to be bullied into it by the white house. Democrats also argue that if they were to hold this vote, they think that the white house would simply come up with some other reason not to cooperate. The Supreme Court is back in session, and at the top of its agenda, the case of two people who were fired from their jobs because they are gay. Jan crawford has this story. I was fired for being gay. Reporter Gerald Bostock says he lost his job in georgia after joining a gay recreational softball league. Its a much bigger issue than just me. Reporter transgender woman Aimee Stephens said she was fired from a micn funel home af transitioning from a man. And we all deserve the same rights 14 federal civil righ act, which prohibits discrimination based on an individuals race, color, religion, sex, or national origin, also protects employees based on their Sexual Orientation or gender identity. But conservative justices suggested those arguments should be directed instead at congress. Justice samuel alito. The point is that discrimination on the basis of sex in the sense that congress understood it in 1964, is a different concept from discrimination on the basis of Sexual Orientation. Justices noted farreaching implications samesex bathrooms, dress codes, and transgender women playing on womens sports teams. Congress repeatedly has refused to change the 1964 law to specifically prohibit employment discrimination based on Sexual Orientation. And until last year, federal appeals courts have uniformly said it wasnt covered, leaving 22 states and the district of columbia to pass their own laws outlawing it. But liberal justices were sympathetic, saying the civil rights law was aimed at combating discrimination, even if not seen as a problem at the time. Justice ruth bader ginsburg. Tight the 7 was meant to strike out the entire spectrum of sex stereotyping. Now, the courts two new justices seemed impossible to predict. Justice neil gorsuch did seem somewhat open to the idea that the words of the law might be read to cover this kind of discrimination, but then he worried about massive social upheaval. Now, there are new concerns this morning about the widely used heartburn medication zantac. The food and Drug Administration found unacceptable levels of cancercausing impurities, both in zantac and its generic version. Some drugstores have already pulled it off the shelves. Dr. Jon lapook brings us the latest. We take the entire tablet, just as a patient would, and we dissolve it into the solvent. Reporter at this connecticut lab, called valisure, researchers test drugs from its own Online Pharmacy to check for purity and quality. Last spring, they decided to analyze a few heartburn drugs to see if they contained a chemical called m. D. M. A. , a probable carcinogen. Last year, that same chemical had led to recalls of some Blood Pressure pills. So, were going to crush this. Reporter okay. One medication stood out zantac and its generic version, ranitidine. It had levels of m. D. M. A. Higher than considered acceptable. Valisure c. E. O. David light the active ingredient in zantac appears to us to be a fundamentally unstable molecule. Reporter light reported to the f. D. A. His suspicion that the problem is not just an impurity, but what could happen to the pill inside the body. And in a variety of conditions conditions of the lab, conditions of the human body it can break down and then form the carcinogen m. D. M. A. Reporter youre saying the ranitidine itself can break down and form m. D. M. A. Correct. Reporter that possibility, that ranitidine could be converted into m. D. M. A. Inside the body, was suggested three years ago in Research Published by william mitch, a professor at stanford university. In a small study, ten volunteers were given a tablet of zantac, and their urine was tested. M. D. M. A. Levels were more than 400 times greater than what the f. D. A. Considers acceptable. Even after adjusting for a new f. D. A. Protocol for measuring m. D. M. A. , mitch got similar results. What we were hoping was that someone else would eventually pick up the results, who is in the pharmaceutical field. Reporter and did they . To my knowledge, not yet. But maybe this will spur them to. Reporter three months after valisure first alerted the f. D. A. To its findings, the Agency Issued a safety alert, saying its own testing found low levels of m. D. M. A. In ranitidine. It is now calling even those levels unacceptable. The agency told cbs news it is now investigating what happens to ranitidine inside the body after its exposed to stomach acid. What do you think happens Going Forward now . What would like to see happen . What weve been petitioning for is for the complete recall of all ranitidine products brand, generic doesnt matter. Doesnt matter who made it or what lot number it is. Reporter zantacs maker, sanofi, told cbs news that the mitch study has limitations, that the company is working closely with the f. D. A. And doing its own robust testing. While zantac is still being sold, some generic makers have issued voluntary recalls. Dr. Jon lapook, cbs news, new york. And starting a business means i have to be well rested, every night of the month. Always ornight pads have up to a 2x larger back for up to 10 hours of protection. It catches leaks, so you can catch zzzzs. Because my morning starts, before morning starts. Always. 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