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Kamala Harris took command of the debate stage on Thursday night time after time -- from quieting a chaotic stage by admonishing her rivals not to engage in a food fight to demolishing Joe Biden with an impassioned critique of his comments about working with segregationists and his record opposing aspects of busing.In what was unquestionably the most difficult moment of the night for the former vice president and front-runner, Harris challenged him for invoking his work with segregationists at a recent fundraiser. She then went on to disassemble his record on busing.It was a spell-binding moment that showed not only her skills as a tough and unsparing debater, but also the fierce side of her persona, which her supporters believe will be devastating up against President Donald Trump."Vice President Biden, I do not believe you are a racist and I agree with you when you commit yourself to the importance of finding common ground, but I also believe and it's personal and it was hurtful to hear you talk about the reputations of two United States senators who built their reputations and career on the segregation of race in this country," Harris said.She said Biden had worked to prevent the Department of Education from integrating school busing during the 1970s, and that decision hurt a little girl in California."That little girl was me," Harris said with emotion swelling in her voice. "So I will tell you that on this subject, it cannot be an intellectual debate among Democrats. We have to take it seriously. We have to act swiftly."It was a moment that put Biden on the defensive with his voice rising as he defended his record, as he would do often in the debate."It's a mischaracterization of my position across the board," Biden said. "I do not praise racists. That is not true. Number one. Number two, if we want to have this litigated on who supports civil rights, I'm happy to do that."After 1928

In the battle between the adolescent penchant for hitting the snooze button and parental desire to rush them onto an early morning school bus, experts say science is increasingly siding with the snooze.The biological clock of teens is shifted, Dr. Mary Carskadon, director of the Sleep and Chronobiology Research Lab at EP Bradley Hospital, told CNN. That means everything influenced by the circadian timing process, including sleeping, waking and eating patterns are set later.And if teens have trouble naturally falling asleep at an early hour and don't get the recommended eight and a half to nine hours of sleep, asking them to be awake, ready and in a classroom by 7:30 a.m. can wreak havoc on their systems, Carskadon said.Students in one state have gotten a reprieve from the early morning blues. California Gov. Gavin Newsom signed legislation Sunday that pushes back start times for middle and high schools to align with teens' circadian rhythms. It's a move sleep experts hope more school districts will follow.That's especially because research suggests that when teens get a later start in the morning, they can do a better job of checking off the things on many parents' priority lists like:Paying attention and getting their homework doneFour out of five public middle and high schools in the US start before 8:30 a.m., the earliest time recommended for teens, according to the US Centers for Disease Control.Carskadon says the negative consequences of early waking on academic performance are obvious: Students have more trouble concentrating in class and retaining information, feel tired during the day, have more absences and tardiness and have a hard time doing their homework and class reading well.There isn't enough time between when their clocks tell them to go to sleep and when they need to be in class to get the sleep they need, she says. And to make matters worse, for many teens, their bodies are telling them it's still time to be in bed when they are trying to listen in class."A lot of kids will just be asleep in first period because their brains are -- almost literally -- on the pillow and not yet in the classroom," she said.Avoiding the junk foodWhen students are off of their regular sleep cycle, they often also fall off of their ideal eating cycle too, Carskadon said. Since the biological clock influences humans' eating, straying from the circadian rhythm could mean eating too much or eating the wrong food at the wrong times, she said.Who among us reaches for a healthy snack when we are tired and awake when we aren't supposed to be, asked Stacy Simera, a licensed social worker who is chair of the sleep committee for the Ohio Adolescent Health Partnership.That disruption not only means worse nutrition, but it can lead to an increased risk for Type 2 diabetes, Carskadon said.Staying out of troubleWhen it comes to impulse control, Carskadon and her colleagues say teenagers already have the accelerator pushed down without any breaks. That's because the emotional side of the brain is well developed in those years, but doesn't have a very strong link to the executive decision-making side.And neuroimaging studies showed that link is even weaker in teens without enough sleep. The result can be trouble controlling their impulses and increasingly engaging in risky behaviors like foregoing helmets, driving under the influence and abusing substances, Carskadon said.Keeping happy and safeFrom a physical health perspective, teens who get adequate sleep also are shown to suffer fewer car accidents and sports injuries, said Simera.She says teens fall asleep easiest and get the best quality sleep from 11 p.m. to 8 a.m. -- the sweet spot. And research shows that straying from that sweet spot and sleeping less is correlated to depression, anxiety and suicide, she said.One study found that for each extra hour of sleep adolescents get, 3899

KINGFISHER, Okla. – An Oklahoma high school student with cerebral palsy surprised his classmates when he walked across the stage at his graduation. Diagnosed with the condition shortly after birth, Hunter Wittrock has been confined to a wheelchair his entire life, but he wanted to push himself and make the most out of his moment in front of the crowd at Kingfisher High School. Wittrock’s father, Jeff, 417

India has successfully launched a mission to soft land a rover on the moon, in a landmark moment for a nation trying to become a space superpower.The country's latest lunar mission, Chandrayaan-2, which means "moon vehicle" in Sanskrit, took off from the Satish Dhawan Space Center at Sriharikota in Andhra Pradesh state at 2:43 p.m., Monday local time (5:13 am ET).The launch was originally scheduled for July 15, but was abruptly called off just 56 minutes before lift-off due to a "technical snag." India is now on the way to becoming the fourth country -- in addition to United States, China and the former Soviet Union -- to make a soft-landing on the lunar surface.The Chandrayaan-2, which weighs 3.8 tons and carries 13 payloads, has three elements -- lunar orbiter, lander and rover, all developed by the Indian Space Research Organization (ISRO).It will travel for two months, before positioning itself in a circular orbit 62 miles (100km) above the moon's surface. From there, the lander -- named Vikram after the pioneer of the Indian space program Vikram Sarabhai -- will separate from the main vessel and gently land on the moon's surface near its South Pole.A robotic rover named Pragyan (meaning "wisdom") will then deploy and spend one lunar day, or 14 Earth days, collecting mineral and chemical samples from the moon's surface for remote scientific analysis.Over the next year, the orbiter will map the lunar surface and study the outer atmosphere of the moon.Kailasavadivoo Sivan, ISRO chairman, said in June that the last 15 minutes of the landing "are going to be the most terrifying moments for us."As well as coinciding with the 50th anniversary of the Apollo moon landing, the launch comes as other space agencies revisit the idea of sending humans to the moon and beyond -- NASA has touted a bold plan to return American astronauts to the moon by 2024.India's space ambitionsThis mission is significant for India -- the country wants to become a major space player and put Indian astronauts in space by 2022."India wants to show, especially since Prime Minister (Narendra) Modi came into office, that India is a major power, and that India has to be treated as a major Indo-Pacific power," said Rajeswari Pillai Rajagopalan, head of the nuclear and space policy initiative at the Observer Research Foundation.Chandrayaan-1, India's maiden lunar mission, discovered water molecules on the surface of the moon. As part of that mission, an impact probe crashed into the moon's south polar region in a controlled landing.India's attempted soft-landing is a far greater technical challenge than the controlled crash of Chandrayaan-1.The two Chandrayaan missions are a precursor to Chandrayaan-3, which is scheduled to make a return mission to the moon in 2023-2024.In 2014, India became the first Asian nation to reach the Red Planet, when it put the Mangalyaan probe into orbit around Mars. The Mars Orbiter Mission famously cost million -- less than the 0 million than Hollywood spent making space thriller "Gravity."In 2017, India 3072

Kellie Chauvin, the wife of jailed former Minneapolis police officer Derek Chauvin, announced she is filing for divorce, her lawyer said in a statement to Minneapolis TV stations. Derek Chauvin was charged with third-degree murder on Friday, four days after holding a knee to the neck of George Floyd, who died while in police custody. “This evening, I spoke with Kellie Chauvin and her family. She is devastated by Mr. Floyd's death her utmost sympathy lies with his family, with his loved ones and with everyone who is grieving,” the lawyer for Kellie Chauvin said. “She has filed for dissolution of her marriage to Derek Chauvin.”“While Ms. Chauvin has no children from her current marriage, she respectfully requests that her children, her elder parents, and her extended family be given safety and privacy during this difficult time.” 851

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