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When it comes to making magic, it wouldn't be complete without a unicorn.And for kindergartner Wyatt Haas of Terry, Montana, his encounter with a unicorn might help give him the extra push he needs as he embarks on one of his biggest battles to date.The 5-year-old was recently diagnosed with brain cancer and was accepted into St. Jude Children's Hospital in Memphis, Tenn.Wyatt and his mom Corissa left Sunday so he could begin treatment.But his send off was something straight out of a fairy tale.Bonanza the unicorn proudly carried Wyatt, complete with crown, around the park as his classmates and teacher looked on.Wyatt's dad, Zach, and his two siblings are staying behind in Montana so Zach can continue working at BNSF.But the family's wish is that everyone can be reunited down in Memphis for Christmas.A 826

Two centuries after its invention, the stethoscope — the very symbol of the medical profession — is facing an uncertain prognosis.It is threatened by hand-held devices that are also pressed against the chest but rely on ultrasound technology, artificial intelligence and smartphone apps instead of doctors’ ears to help detect leaks, murmurs, abnormal rhythms and other problems in the heart, lungs and elsewhere. Some of these instruments can yield images of the beating heart or create electrocardiogram graphs.Dr. Eric Topol, a world-renowned cardiologist, considers the stethoscope obsolete, nothing more than a pair of “rubber tubes.”It “was OK for 200 years,” Topol said. But “we need to go beyond that. We can do better.”In a longstanding tradition, nearly every U.S. medical school presents incoming students with a white coat and stethoscope to launch their careers. It’s more than symbolic — stethoscope skills are still taught, and proficiency is required for doctors to get their licenses.Over the last decade, though, the tech industry has downsized ultrasound scanners into devices resembling TV remotes. It has also created digital stethoscopes that can be paired with smartphones to create moving pictures and readouts.Proponents say these devices are nearly as easy to use as stethoscopes and allow doctors to watch the body in motion and actually see things such as leaky valves. “There’s no reason you would listen to sounds when you can see everything,” Topol said.At many medical schools, it’s the newer devices that really get students’ hearts pumping.“Wow!” ″Whoa!” ″This is awesome,” Indiana University medical students exclaimed in a recent class as they learned how to use a hand-held ultrasound device on a classmate, watching images of his lub-dubbing heart on a tablet screen.The Butterfly iQ device, made by based by Guilford, Connecticut-based Butterfly Network Inc., went on the market last year. An update will include artificial intelligence to help users position the probe and interpret the images.Students at the Indianapolis-based medical school, one of the nation’s largest, learn stethoscope skills but also get training in hand-held ultrasound in a program launched there last year by Dr. Paul Wallach, an executive associate dean. He created a similar program five years ago at the Medical College of Georgia and predicts that within the next decade, hand-held ultrasound devices will become part of the routine physical exam, just like the reflex hammer.The devices advance “our ability to take peek under the skin into the body,” he said. But Wallach added that, unlike some of his colleagues, he isn’t ready to declare the stethoscope dead. He envisions the next generation of physicians wearing “a stethoscope around the neck and an ultrasound in the pocket.”Modern-day stethoscopes bear little resemblance to the first stethoscope, invented in the early 1800s by Frenchman Rene Laennec, but they work essentially the same way.Laennec’s creation was a hollow tube of wood, almost a foot long, that made it easier to hear heart and lung sounds than pressing an ear against the chest. Rubber tubes, earpieces and the often cold metal attachment that is placed against the chest came later, helping to amplify the sounds.When the stethoscope is pressed against the body, sound waves make the diaphragm — the flat metal disc part of the device — and the bell-shaped underside vibrate. That channels the sound waves up through the tubes to the ears. Conventional stethoscopes typically cost under 0, compared with at least a few thousand dollars for some of the high-tech devices.But picking up and interpreting body sounds is subjective and requires a sensitive ear — and a trained one.With medical advances and competing devices over the past few decades, “the old stethoscope is kind of falling on hard times in terms of rigorous training,” said Dr. James Thomas, a cardiologist at Northwestern Medicine in Chicago. “Some recent studies have shown that graduates in internal medicine and emergency medicine may miss as many of half of murmurs using a stethoscope.”Northwestern is involved in testing new technology created by Eko, a Berkeley, California-based maker of smart stethoscopes. To improve detection of heart murmurs, Eko is developing artificial intelligence algorithms for its devices, using recordings of thousands of heartbeats. The devices produce a screen message telling the doctor whether the heart sounds are normal or if murmurs are present.Dennis Callinan, a retired Chicago city employee with heart disease, is among the study participants. At age 70, he has had plenty of stethoscope exams but said he feels no nostalgia for the devices.“If they can get a better reading using the new technology, great,” Callinan said.Chicago pediatrician Dr. Dave Drelicharz has been in practice for just over a decade and knows the allure of newer devices. But until the price comes down, the old stalwart “is still your best tool,” Drelicharz said. Once you learn to use the stethoscope, he said, it “becomes second nature.”“During my work hours in my office, if I don’t have it around my shoulders,” he said, “it’s as though I was feeling almost naked.” 5223

UPDATE: 9:15 p.m. ET: Singer R. Kelly was arrested on Friday after he turned himself over to authorities after he was charged earlier in the day with 10 counts of sexual abuse. He did not answer any questions as he walked through a sea of photographers and reporters with handcuffs behind his back. PREVIOUS STORY: Musician R. Kelly has been indicted on 10 counts of aggravated criminal sexual abuse -- a class 2 felony -- involving four alleged victims, Cook County State's Attorney Kim Foxx said Friday.His attorney, Steve Greenberg, tweeted that Kelly would turn himself into police between 11 p.m. CT and midnight.Kelly is scheduled to appear in court Saturday for a bail hearing. Arraignment is set for March 8.A warrant has been issued for Kelly's arrest, Chicago police say. The charges handed up in an indictment from a grand jury span from 1998 to 2010, Foxx said.If convicted, Kelly faces a maximum of seven years in prison for each count.Kelly has been 976

Twitter is considering labeling tweets that violate its rules but should remain on the platform because they're in the public interest.Vijaya Gadde, Twitter's head of legal, policy and trust made the announcement during an on-stage 244

When Neil Armstrong and Buzz Aldrin stepped on the moon on July 20, 1969, there's no doubt that the entire human race was in awe. For thousands of years, humans had imagined leaving Earth and visiting worlds outside of Earth. That day had finally come.The 268