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With much of the NFL world camped out in the San Francisco Bay Area in the days before Super Bowl 50, researchers released sobering news: late Oakland Raiders quarterback Ken Stabler had a degenerative brain disease associated with repeated blows to the head.
Dozens of former players have been diagnosed with chronic traumatic encephalopathy, some who died in old age, like Frank Gifford, and a few who took their lives, like Junior Seau. There is no known treatment, or even a test that can point it out in the living - it's detected in post-mortem brain scans. But to one former player who's sure his nine-year career gave him the disease, there's an obvious treatment that isn't allowed in the NFL, yet will be easy to score right near Levi's Stadium during the Super Bowl this Sunday for anyone with a doctor's note: medical marijuana.
Donald Trump said Sunday that he does not need to win the New Hampshire primary and that the Iowa caucus results were "very unfair" to him and Ben Carson.
"There are those that say I actually came in first, depending on how you want to count the votes, to be honest, because that was a horrible thing that took place," Trump said on "Meet The Press."
Iowa caucus winner Ted Cruz apologized to Ben Carson after supporters spread rumors that Carson was planning to end his campaign in an effort to get them to support Cruz. Trump has said it may have pushed Cruz over the top and caused him to fall to second.
Trump said he would like to do well in the Granite State, but dismissed the idea it is a must win.
Senator Bernie Sanders defended himself Sunday against criticism that he does not have sufficient depth or interest in foreign policy matters.
"Let me reassure the American people…it goes without saying that a president must be well-versed in foreign policy, must have a foreign policy position. And I will of course do that," Sanders said on NBC's "Meet the Press" in response to criticism by some of his debate performance Thursday on the issue of foreign policy.
Sanders has faced intense scrutiny during his presidential campaign for not being as comfortable or fluent as former Secretary of State Hillary Clinton when discussing foreign affairs.
"It is not just experience that matters, it is judgment," argued the Vermont senator.
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Orlando police say two people were killed and 10 others were hurt during a shooting inside a nightclub early Sunday morning, according to police.
About 300 people were in Club Glitz when the violence broke out just before 1 a.m. ET, NBC News reported.
Of eleven people shot, one died on the scene, and one died at the hospital, police said. One of the nine surviving gunshot victims was hospitalized and in critical condition, while the other eight suffered non-life-threatening injuries, according to police.
One additional person sustained an injury that wasn't related to a gunshot, police said.
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Donald Trump was back, Carly Fiorina was out and Sen. Marco Rubio of Florida was drawing attacks after his strong showing in Iowa. The GOP presidential candidates were on stage Saturday night for the final debate before the New Hampshire primary, where some of the Republicans must do well if they are to continue. Trump, who finished second behind Sen. Ted Cruz of Texas in the Iowa caucuses, returned after skipping the last debate. Fiorina, the former CEO of Hewlett-Packard, was excluded by the rules of host ABC News. Here are some of the liveliest moments of the evening.
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A bus has exploded in central London — but this time it's only for a movie.
City officials Sunday reassured the public that the explosion was a movie stunt for "The Foreigner" starring Jackie Chan and Pierce Brosnan.
The sight of the bus in flames and the twisted wreckage afterward caused consternation on Twitter from London residents who said the public had not been adequately warned about the stunt. Some complained that children had been frightened by the blast.
It reminded some of the 2005 attack on London's transport system that killed 52 civilians. That attack included the explosion of a bus in central London.
The mother of a Pennsylvania 16-year-old with cerebral palsy is taking a stand against bullying, after a video showing students violently kicking her son to the ground and laughing was shared on social media, NBC News reported.
"I cried when I saw that," Margaret Wooding told NBC affiliate station WPXI. "How can kids be so cruel? I don't want this to happen, not just to my child but to anyone.
Isaiah Wooding has cerebral palsy, a static neurological disorder the affects muscle coordination and body movement.
The video, which was posted to Facebook by a classmate, shows a student at Penn Hills High School kicking 16-year old Wooding to the ground. The student filming the confrontation laughs while the bullying occurs.
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Two teen brothers are dead and six others injured following a late-night accident on the bobsled track at the Canada Olympic Park in Calgary, NBC News reported.
Twin brothers Jordan and Evan Caldwell, 17, died at the scene after a group of teens broke into the facility and used a "personal sled" on the bobsled track early Saturday morning, police said.
"Part way down, the group hit a large gate used to separate the bobsled and luge tracks," police said in a statement.
The other six teenagers were taken to hospital with injuries ranging from minor to serious, police said in a statement, adding that the nature of their injuries made it difficult to identify "many" of the victims.
Police said CCTV footage was being reviewed and investigators were working to determine how the teens entered the facility, which hosted events at the 1988 Winter Olympics.
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The Republican debate in Manchester, New Hampshire, got off to a bit of an awkward start on Saturday.
It began on a high note, when ABC moderator David Muir introduced New Jersey Gov. Chris Christie.
Ben Carson's name, drowned out by applause, was called second. But instead of making his way onto the stage, he stood off to the side as the moderators continued on down the candidate list.
Carson then started to make his way out, but suddenly stopped short when the moderators called out Ted Cruz’s name.
There have been no higher stakes on a Republican debate stage in the 2016 campaign for president than there were Saturday night.
Seven GOP Republican hopefuls faced off just three days before a make-or-break New Hampshire primary that some of them are not likely to survive.
Coming off a strong Iowa finish, Florida Sen. Marco Rubio tripped up early under attack from former Florida Gov. Jeb Bush and New Jersey Gov. Chris Christie, who are jockeying for the same Republican voters.
The murders of three Muslim-American college students almost one year ago devastated their families, but it didn't stop their loved ones from an important mission: making sure the trio's legacy of service lives on, NBC News reported.
A tweet that was written more than a year before Deah Barakat, 23, was killed in Chapel Hill, North Carolina, on Feb. 10 with his wife and sister-in-law has served as the inspiration for the opening of a new community center meant to honor their legacy.
A neighbor is accused of fatally shooting Barakat and his wife, Yusor Mohammad Abu-Salha, 21, and her sister, Razan Mohammad Abu-Salha, 19, following a dispute.
"I have a dream one day, to have a unified and structured community," Barakat tweeted in July 2014. "Have a voice in our society and support the youth with their projects."
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He's a self-proclaimed anti-extremist Islamic warrior and Vladimir Putin supporter with a penchant for horse racing, wrestling, Hollywood celebrities — and, according to some, brutal repression, NBC News reported.
Now Ramzan Kadyrov, the leader of the Russian republic of Chechnya, looks to be trying to muscle into a bigger role on the regional stage, experts watching the strongman say.
The 39-year-old "is interested in being a deputy prime minister overseeing inter-ethnic relations, a job that the Kremlin would need to create specifically for him," according to Alexei Malashenko of the Carnegie Moscow Center think tank.
Kadyrov has a lot going for him. The scion of a powerful clan, Kadyrov battled the federal Russian government in the first Chechen war in the 1990s. The Kadyrovs sided with Moscow in the second war in the 2000s when the predominantly secular uprising was taken over by jihadists.
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North Korea on Sunday defied international warnings and launched a long-range rocket that the United Nations and others call a cover for a banned test of technology for a missile that could strike the U.S. mainland.
The rocket was fired from North Korea's west coast and tracked separately by the governments Japan and South Korea, which immediately convened an emergency national security council meeting. South Korean media reported that the rocket may have failed, but provided no other details. The South Korean government couldn't immediately confirm the reports.
New York is taking steps to stop therapists from trying to change young people's sexual orientation, Gov. Andrew Cuomo announced Saturday, joining other states that have acted against what's known as gay conversion therapy. The move comes as gay rights advocates have tried to ban a practice that major mental health organizations have repudiated. Cuomo announced planned regulations that would bar insurance coverage for the therapy for minors and prohibit mental health facilities under state Office of Mental Health jurisdiction from offering it to minors.
A former New Jersey corrections officer has been convicted of sexually assaulting a woman who was detained in a cell under his supervision.
U.S. Attorney Paul Fishman said in a statement Friday that Shawn Shaw, of Newark, faces a sentence of up to life in prison on the charge of depriving the victim of her rights and up to 20 years on an obstructing justice charge.
Officials say that in December 2010 Shaw, who was an Essex County Correctional officer, was the only guard on duty in the female unit.