NFL concussions more common on colder game days
The study also found ankle injuries were more common at colder temperatures
Concussion
NFL demands retraction of New York Times story on concussions
League makes veiled threat of legal action over story that called concussion research flawed; paper stands by report
NFL says concussions were way up in 2015
League says it will study what might have caused head injuries to rise by 58 percent this season
New technology offers on-field head injury reporting
Experts hope system will help get student athletes the speedy treatment they need after a head injury or concussion
Could helmet-free football practice prevent concussions?
Experts say the approach may encourage football players to avoid using their heads as weapons
Here's to your health: Medical news that mattered in 2015
New mammogram advice, vaccine controversies, and a little pink pill were among the top health stories of the year
Cheerleading injuries less common, more severe
Supporters say that when cheerleading is not considered an official sport, there can be dangerous consequences
Doctor: "Clear signs of a concussion" after Rams QB hit
NFL to hold mandatory conference call with athletic trainers after quarterback Case Keenum remained in game despite suffering concussion
NFL investigating why QB kept playing after concussion
St. Louis Rams quarterback Case Keenum remained in the game after a hard hit slammed his head into the ground
Case Keenum concussion challenges NFL protocol
Rams quarterback was obviously woozy after his head slammed the ground, but he never missed a play, leading to many questions for NFL
Will a ban on headers keep young soccer players safe?
Limits are set for older children, too, after U.S. Soccer Federation faced a safety lawsuit from some parents
Blood test may help diagnose concussions in kids
Researchers say the simple test could one day help coaches and parents make decisions about children's care on the field
New guidelines for youth football follow injuries, deaths
The American Academy of Pediatrics' recommendations come as a Tennessee high school football player is in critical condition and a high school in Chicago mourns the death of a student athlete
Chris Nowinski: The NFL needs to "evolve" to protect players
The co-founder of the Sports Legacy Institute, which focuses on traumatic brain injury research, talks to CBS News about how football rules need to be changed to address concussion and chronic traumatic encephalopathy issues
Concussions linked to Alzheimer's disease plaques
Daily health headlines: Concussions may trigger another neurological disease, plus more top stories
James Brown: Fear Favre describes felt by other former players
Brett Favre revealed this week that he suffers from memory loss, an admission that comes after the NFL's recent $775 million concussion settlement
Favre: Memory loss "a little bit scary to me"
The only quarterback to have won three consecutive NFL MVP awards said he suffers from memory loss and believes it may be the result of concussions
Brain disease found in 87 deceased NFL players
Researchers say data provides more evidence of the link between head trauma in football and long-term brain deterioration
"Concussion" director says no compromises made for the NFL
A day after its trailer debuted online, the Will Smith football head-trauma film is already sparking controversy
Memory loss takes toll on former NFL players
Study looks at the long-term damage from concussions in professional football
Kids' concussions cause problems at school
Students often have a hard time with academics after a head injury, researchers say
Judge OKs $1 billion deal over NFL concussions lawsuit
Awards for players who suffer from Alzheimer's disease or moderate dementia average out to $190,000 per person
Brain scans may spot concussion-related condition
New technique may help diagnose football players and others suffering from lingering damage
Chris Borland on retirement: "The best decision for me"
The star NFL rookie linebacker answers critics on "Face the Nation" who accused him of making a cash grab by playing just one year
Why NFL rookie Chris Borland decided to retire after one season
The 24-year-old linebacker's announcement is bringing the risks of long-term head trauma back into the spotlight
At least 80 dead in Congo's Ebola outbreak as WHO declares public health emergency
At least 80 deaths have been reported in Congo's new Ebola disease outbreak in the eastern Ituri province, authorities said.
GOP Sen. Cassidy fights to hold onto seat in Louisiana primary
Louisianans voted Saturday in the state's Senate primaries as Sen. Bill Cassidy fights to hold onto his seat, facing a Trump-backed primary challenger.
Live
Israel strikes Lebanon as Iran says it "cannot trust the Americans"
Two days of talks in Washington between Lebanon and Israel produced an extension of the current ceasefire by 45 days.
Thousands march in "Unite the Kingdom," far-right rally in central London
Police estimated that around 60,000 people attended the "Unite the Kingdom" march, making it one of the largest right-wing mobilizations seen in Britain in recent years.
Days after Trump's summit in Beijing, Putin will meet with China's Xi
Russia's Putin will travel to Beijing next week to meet China's Xi. The announcement came one day after President Trump returned from his own summit with the Chinese leader.
Colorado River crisis could force drastic water measures across the West
Approximately 40 million people across the West depend on the Colorado River for water every single day. But the region could soon face drastic measures as the river keeps shrinking.
Exorbitant World Cup ticket prices creating sticker shock for soccer fans
FIFA President Gianni Infantino joked that if someone does pay $2 million for a ticket to the World Cup final, "I will personally bring him a hot dog and a Coke."
Iran men's soccer team heading to Turkey for World Cup preparations
Iran and the U.S. cut diplomatic ties in 1980, and the players are expected to use their time in Turkey to complete the necessary procedures for obtaining visas.
Venezuela says it deported Alex Saab, a key Maduro ally, to the U.S.
Venezuela's government says it has deported a close ally of Nicolás Maduro to face judicial proceedings in the U.S. less than three years he was pardoned by President Joe Biden.
U.S.
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A "Survivor" finalist's mission to prove his late sister was murdered
"Survivor" 48 and 50 contestant Joe Hunter believes his sister Joanna, whose death was ruled a suicide, was murdered. He and their mother are working to be Joanna's voice and advocate for others who have experienced domestic violence.
Exorbitant World Cup ticket prices creating sticker shock for soccer fans
FIFA President Gianni Infantino joked that if someone does pay $2 million for a ticket to the World Cup final, "I will personally bring him a hot dog and a Coke."
Colorado River crisis could force drastic water measures across the West
Approximately 40 million people across the West depend on the Colorado River for water every single day. But the region could soon face drastic measures as the river keeps shrinking.
Iowa farmers, feeling the strain, hope for positive outcome from Trump's China summit
The war with Iran has created an additional strain for farmers, raising the price of diesel by about 50%. The cost of nearly everything else, from seed to fertilizer, is rising too.
Venezuela says it deported Alex Saab, a key Maduro ally, to the U.S.
Venezuela's government says it has deported a close ally of Nicolás Maduro to face judicial proceedings in the U.S. less than three years he was pardoned by President Joe Biden.
MoneyWatch
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Ice cream sold in 17 states recalled for potential metal fragments
No injuries have been reported because of the issue, the Food and Drug Administration said.
Trump talks up trade deals with China, but experts see no big wins for U.S.
President Trump's trip to China could bolster economic relations, but failed to deliver a breakthrough deal, some trade and energy experts said.
Which college majors offer the best long-term return on investment?
College grads outearn people without a degree within 15 years, even after paying for tuition, study finds.
How will Jerome Powell be remembered as he exits as Fed chair?
As Powell steps down after more than eight years leading the Federal Reserve, economists say he helped steer the U.S. through historic shocks but misread inflation.
Oklahoma becomes latest state to sue Roblox over child safety concerns
Oklahoma has filed a lawsuit against Roblox, making it the latest state to take legal action against the popular gaming platform over child safety concerns.
Politics
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Thousands march in "Unite the Kingdom," far-right rally in central London
Police estimated that around 60,000 people attended the "Unite the Kingdom" march, making it one of the largest right-wing mobilizations seen in Britain in recent years.
Days after Trump's summit in Beijing, Putin will meet with China's Xi
Russia's Putin will travel to Beijing next week to meet China's Xi. The announcement came one day after President Trump returned from his own summit with the Chinese leader.
GOP Sen. Cassidy fights to hold onto seat in Louisiana primary
Louisianans voted Saturday in the state's Senate primaries as Sen. Bill Cassidy fights to hold onto his seat, facing a Trump-backed primary challenger.
Trump says U.S. has killed Islamic State leader in Nigeria
President Trump announced Friday evening that U.S. and Nigerian military forces had killed Abu-Bilal al-Minuki, a leader in the Islamic State group.
Controversial FDA official leaving drug center post in latest departure at agency
Dr. Tracy Beth Høeg, leader of the Food and Drug Administration division responsible for regulating prescription and over-the-counter drugs, is leaving her post, a senior FDA official confirmed.
HealthWatch
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Version of hantavirus behind deadly outbreak matches known strain, France says
Genomic analysis showed the virus found aboard the MV Hondius shows no evidence of new characteristics so far.
At least 80 dead in Congo's Ebola outbreak as WHO declares public health emergency
At least 80 deaths have been reported in Congo's new Ebola disease outbreak in the eastern Ituri province, authorities said.
A hospital worker felt healthy. Then he had 3 heart attacks in 4 days.
Tommy Bell thought he was in good shape. But a series of heart attacks painted a more complicated picture.
New York doctor who survived Ebola says he fears for healthcare workers
A New York doctor who contracted and survived Ebola more than a decade ago says he is worried for healthcare workers who are at the center of treating the latest outbreak.
Controversial FDA official leaving drug center post in latest departure at agency
Dr. Tracy Beth Høeg, leader of the Food and Drug Administration division responsible for regulating prescription and over-the-counter drugs, is leaving her post, a senior FDA official confirmed.
World
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Iran men's soccer team heading to Turkey for World Cup preparations
Iran and the U.S. cut diplomatic ties in 1980, and the players are expected to use their time in Turkey to complete the necessary procedures for obtaining visas.
Bulgaria wins Eurovision Song Contest clouded by politics and protests
This year's field of 35 contestants is the smallest since 2003.
Thousands march in "Unite the Kingdom," far-right rally in central London
Police estimated that around 60,000 people attended the "Unite the Kingdom" march, making it one of the largest right-wing mobilizations seen in Britain in recent years.
Former mayor and aide killed in shooting in Colombia weeks before election
Colombia's presidential elections are scheduled for May 31, marking the end of the term for Gustavo Petro, the country's first leftist president.
At least 80 dead in Congo's Ebola outbreak as WHO declares public health emergency
At least 80 deaths have been reported in Congo's new Ebola disease outbreak in the eastern Ituri province, authorities said.
Entertainment
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A "Survivor" finalist's mission to prove his late sister was murdered
"Survivor" 48 and 50 contestant Joe Hunter believes his sister Joanna, whose death was ruled a suicide, was murdered. He and their mother are working to be Joanna's voice and advocate for others who have experienced domestic violence.
Bulgaria wins Eurovision Song Contest clouded by politics and protests
This year's field of 35 contestants is the smallest since 2003.
"Survivor" superfan builds her own tribe
The "Survivor" season 50 finale premieres on Wednesday, and "CBS Saturday Morning" meets Sarah Polakiewicz, a "Survivor" superfan in Atlanta who built her own community around the show.
"Dutton Ranch" stars on Texas transition
Kelly Reilly, Cole Hauser, and Finn Little of "Dutton Ranch" sit down with "CBS Saturday Morning" to discuss their characters' transitions from Montana to Texas, and more on the new "Yellowstone" spinoff.
Taj Mahal performs "Time"
Five-time Grammy winner and blues legend Taj Mahal is best known for hits like "Corinna" and "Statesboro Blues," and has collaborated with The Rolling Stones and Eric Clapton during his career that spans six decades. His latest album, "Time," was recorded with his long-time bandmates "The Phantom Blues Band." Here's Taj Mahal performing "Time."
Technology
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Technology
Atlanta residents report Waymo traffic jams
Atlanta residents say they're waking up to traffic jams of self-driving Waymo vehicles confused by neighborhood signage.
Waymos get in Atlanta traffic jam
Atlanta residents woke up to Waymo traffic jams on Friday. The driverless cars took over a quiet cul-de-sac. Skyler Henry has more details.
How AI powered robots are helping small farms
From labor shortages to environmental impacts, farmers are looking to AI to help revolutionize the agriculture industry. One California startup, Farm-ng, is tapping into the power of AI and robotics to perform a wide range of tasks, including seeding, weeding and harvesting.
Oklahoma becomes latest state to sue Roblox over child safety concerns
Oklahoma has filed a lawsuit against Roblox, making it the latest state to take legal action against the popular gaming platform over child safety concerns.
How the Trump-Xi summit could impact AI race
President Trump's visit to Beijing comes as the U.S. and China compete for artificial intelligence supremacy. Matt Sheehan, senior fellow at the Carnegie Endowment for International Peace, joins with analysis.
Science
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New dinosaur weighing as much as 9 elephants identified by scientists
The long-necked herbivore is the largest ever found in Southeast Asia, researchers said.
How a growing El Niño will affect 2026 hurricane season in Atlantic, Pacific
The last time an El Niño pattern occurred was in 2023, when the Eastern Pacific hurricane season produced 20 tropical systems.
NASA spacecraft to fly past Mars on voyage to rare metal asteroid
NASA's Psyche spacecraft will slingshot past Mars on Friday, on its way toward a rare metal-rich asteroid.
Emperor penguins in focus as Antarctica talks start in Japan
Greater protections for endangered emperor penguins and how to manage growing tourism are topping the agenda at talks on Antarctica in Japan.
What's in the released UFO files?
The Pentagon released UFO documents on Friday, with President Trump telling the public to "have fun" deciding for itself what is going on. Carter Evans reports.
Crime
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A "Survivor" finalist's mission to prove his late sister was murdered
"Survivor" 48 and 50 contestant Joe Hunter believes his sister Joanna, whose death was ruled a suicide, was murdered. He and their mother are working to be Joanna's voice and advocate for others who have experienced domestic violence.
Details on charges against Mohammad Al-Saadi
Mohammad Baqer Saad Dawood Al-Saadi, an Iraqi national, is facing federal charges for his alleged terror plots targeting Jewish institutions around the U.S.
Terror plot foiled, suspect under arrest
A terror plot targeting Jewish institutions in New York, California and Arizona has been foiled, and a man linked to the alleged scheme is under arrest on Friday. Prosecutors say the Iraqi suspect is tied to other global attacks and claim he wanted payback for the U.S. and Israeli war on Iran. Tom Hanson reports.
Iraqi man charged with terror plot: officials
An Iraqi national was arrested and charged with planning to carry out several terror attacks in the U.S., including at a New York City synagogue and other prominent Jewish centers in Los Angeles and Scottsdale, Arizona. CBS News' Anna Schecter reports.
Sources: Iraqi national planned synagogue attacks
Federal prosecutors charged an Iraqi national on Friday with planning several terrorist attacks in the U.S. as retribution for the Iran war. CBS News' Anna Schecter has the latest.
Space
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SpaceX launches cargo ship to International Space Station
The International Space Station-bound SpaceX Cargo Dragon is loaded with 6,500 pounds of needed equipment, research gear and crew supplies.
NASA maps show Earth's brightest and darkest regions at night
Researchers expected to find "a gradual increase in artificial light at night," but instead saw "much more nuanced patterns," NASA said.
NASA spacecraft to fly past Mars on voyage to rare metal asteroid
NASA's Psyche spacecraft will slingshot past Mars on Friday, on its way toward a rare metal-rich asteroid.
UFO files reveal astronauts saw mysterious objects and lights in 1972
NASA's Apollo 17 crew reported seeing three mysterious dots and sparks that resembled fireworks, according to new files released by the Pentagon.
Pentagon begins releasing UFO files: "It's time the American people see"
Defense Secretary Pete Hegseth said in a statement that the documents "have long fueled justified speculation — and it's time the American people see it for themselves."
Latest Galleries
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Notable Deaths in 2026
A look back at the esteemed personalities who've left us this year, who'd touched us with their innovation, creativity and humanity.
Evidence in the Barbara Kendhammer case
Does the evidence show a cover-up, or was Todd Kendhammer wrongfully convicted for the murder of his wife?
The life & near death of prizefighter Christy Salters-Martin
Christy Salters-Martin dominated in the boxing ring but faced her toughest challenger at home.
Timeline: The disappearance of George Smith
Family seeks answers in death of newlywed who disappeared in 2005 while on Mediterranean honeymoon cruise.
Who is Alix Tichelman?
Meet the tattooed beauty charged in the death of Google executive Forrest Hayes.
Latest CBS News Videos
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Latest CBS News Videos
Veterans reunite with vintage war planes
In Peru, Illinois, the veterans reunite with the vintage warplanes they once flew. Noel Brennan has the story.
World Cup prices shock fans
Anticipation is building for next month's World Cup Soccer Tournament, and so are costs, for both fans and the host cities. Adam Yamaguchi has more.
Colorado River in crisis
The Colorado River is on the brink of disaster. Its water is shared by seven states, which is a big part of the problem. Jonathan Vigliotti reports.
Railroad employees on strike in New York
Workers for the busiest commuter rail service in North America are on strike. 3,500 Long Island Rail Road employees walked off the job in New York. Ali Bauman reports.
Iowa farmers on economic toll
Many struggling American farmers had big hopes for President Trump's China summit. But many were still left with questions. Lana Zak reports.