NHL Commissioner Gary Bettman rejects ties between CTE and playing hockey

CTE is a major threat to NFL players

A week before Super Bowl LVII, Boston University released findings from a study diagnosing 91.7% of former NFL players in their 376-person study with chronic traumatic encephalopathy. It was a stark comparison to the less than 1% of CTE diagnosis in non-football players.

Following the NFL's concussion settlement, numerous victims were denied payouts

In 2015, the NFL finalized a landmark settlement with former players alleging concussions suffered in games were causing brain diseases. The settlement promised to pay every former player who developed dementia or diseases linked to concussions. This Washington Post investigation interviewed former players who filed claims under the agreement, but said they were rejected based on definitions in the settlement.

Sports leagues have attempted to prevent athletes from betting

As pro and collegiate sports embrace betting (and the revenue that comes with it), each league works diligently to ensure the integrity of the games by hiring private firms to analyze irregular bets. These companies have flagged bets that led to the firing of Alabama’s baseball coach, the suspension of multiple athletes at Iowa and Iowa State, and, most recently, a lifetime ban on former Toronto Raptors forward Jontay Porter by the NBA in April 2024.

National Hockey League, explained

Founded in 1917, the NHL started with four Canadian teams and now spans 32 franchises across North America. Its iconic Stanley Cup, first awarded in 1893, remains a unique prize, with winners' names hand-engraved each year. The league generates billions in annual revenue, aided by key expansions, lucrative TV deals, and global fan engagement. While player safety and labor disputes have posed challenges, the NHL remains a cornerstone of professional sports, offering an 82-game season culminating in the fiercely contested Stanley Cup Final.

The biggest controversies of the NFL

Some of the biggest controversies in NFL history didn’t just spark debate—they changed the game. From Spygate and Deflategate to concussion research and the league's ambivalent stance on it, these moments led to new rules, safety measures, and major policy shifts. Explore how each scandal shaped the league and its future.

NHL players used to not wear helmets or masks

Until the 1970s, hockey goalies didn't wear masks to protect their faces with any regularity. Instead, they took pucks off their cheeks, foreheads, and mouths, resulting in serious scars. Any player who entered the league after June 1, 1979, was required to wear a helmet, but several players who'd started before then chose to continue playing without one.

Hockey enforcers are players responsible for guarding against aggression from the opposing team

From the 1980s through to the early 2000s, enforcers were a regular part of NHL lineups. At 6 feet 7 inches, Derek Boogaard’s body was made for the part, but he was found to have suffered from CTE after his tragic death at 28. Stories about Boogaard helped dramatically reduce enforcers in hockey and opened discussions for player safety.

​​Some allege the NFL has shifted gameplay toward fantasy

Recent rule changes in the league have increased passing and point-scoring, which critics argue is motivated by a desire to appeal to fantasy-loving viewers who might be frustrated by slower, lower-scoring games.

NHL player Craig MacTavish was convicted of vehicular homicide in the middle of his career

In January 1984, Boston Bruins center Craig MacTavish was driving home after a practice while under the influence of alcohol. He struck a car driven by Kim Radley, who died four days later. MacTavish was sentenced to a year in prison before resuming his career in Edmonton.

NFL Draft decisions are shaped by brain science, data, and office culture

Carnegie Mellon researchers say Draft-room choices are influenced by the "jackpot effect"—where higher stakes can impair performance—as well as by groupthink, the limits of data, and whether scouts feel safe speaking up.

Korey Stringer, of the Minnesota Vikings, died of heat-related illness in 2001

In response, the NFL overhauled its heat approach and no other player has since died from heat-related illness. Even at the high school level, research suggests safety measures should include: mandating water breaks, keeping a cool tub available, and having athletes acclimate to high-temperature playing conditions for a week or longer before donning the full set of protective equipment.

In 1985, one player said 40% of his colleagues used cocaine

The 1985 Pittsburgh Drug Trials found over a dozen MLB players taking the stand to testify about drug use around the league. Mets star Keith Hernandez, who was given immunity, testified 40% of players used cocaine. The trial led to seven convictions.

Traumatic brain injury is a leading cause of brain death—and TBIs are trending up

Traumatic brain injury-related deaths have generally increased between 2000 and 2023, growing from roughly 49,000 to more than 68,000 in 2023. Firearm-related suicide is the most common cause of TBI-related deaths in the US, according to the Centers for Disease Control and Prevention. People also experience TBIs from falls, motor vehicle crashes, or assaults.

Pete Rozelle made football an American obsession

There have been eight NFL commissioners in the league’s 100-plus year history, but none of them changed the league quite like Pete Rozelle. This 1984 New York Times Magazine profile looks back at the substantial changes Rozelle brought to the league since he took the job in 1960, as well as the challenges he faced while in office.

NBA players are the best paid athletes in major US sports

The NFL is the most valuable pro league in the world, but its players aren’t making nearly as much as NBA players. This CNBC video dives into how league structure, salary cap, and guaranteed contracts define how much an athlete will make, and shows how NBA players are able to use those to get almost double the average annual salary of other pro leagues.

In 1975, a Major League Baseball clause that kept players legally tied to their teams after retirement was dismantled

Players fought the "reserve clause" for years, citing the Sherman Antitrust Act of 1890, but to no avail—in fact, the Supreme Court ruled professional baseball was neither interstate nor commerce in 1922. Players effectively unionized in 1966, and by 1975, an arbitration panel ruling led to the dismantling of the reserve clause, which had been the only antitrust exemption in professional sports.

John Riddell’s first helmet was adopted by college football teams in 1939

The early days of football were violent and there was little protection for players, especially their heads. When deaths became commonplace, John Riddell set out to invent a better way to protect football players. Eventually, the technology from Riddell’s helmets ended up on WWII battlefields.

Hockey romance novels have become an unexpected sensation

The combination was not an obvious hit, but books like "Hockey With Benefits," "Body Check," and "Puck and Prejudice" (a Jane Austen fan fiction) have grown popular thanks to a romance novel boom and an interest on TikTok. Now, HBO and Amazon are taking note with streaming adaptations. (Some readers may experience a paywall.)

See the “Miracle on Ice” through the eyes of a Soviet player

In this video, hockey legend Slava Fetisov reflects on the USSR’s powerhouse teams, his experience in the 1980 Olympic loss to the US, and his later move to the NHL—where Russian players became dominant forces.

The longstanding bond between the NBA and anime

Japanese anime and the National Basketball Association may not have obvious similarities, but fans have long noticed the shared themes of heroic accomplishment and intense competition. Both NBA players and fans draw inspiration from anime, comparing dramatic basketball moments to well-known anime scenes.

The Hans Niemann scandal rocked chess in 2023

In 2022, GM Hans Niemann was accused by Magnus Carlsen of cheating—a controversy that led to an internal Chess.com report alleging Niemann “likely cheated” more than 100 times in online games.

A quote from sports journalist Stuart Scott

"In football, as in life, the hits you don’t see coming are the ones that do the most damage."

Some scientists argue NDEs are constructed by the brain, not actually experienced

Despite the powerful memories associated with NDEs, scientists question the idea that the experiences prove consciousness endures after death, opting instead to find physiological explanations for common reports of out-of-body experiences, euphoric and lucid thinking, and more.

What the research says about the link between lead pollution and crime

The lead-crime hypothesis links childhood lead exposure to impulsivity and aggression as an adult, traits typically associated with higher crime risk. A 2022 meta-analysis found that reducing lead may explain up to 28% of the US homicide decline, but not the broader crime drop.

NASCAR’s SAFER barriers help reduce tragedies at races

Following the death of Dale Earnhardt Sr. in 2001, NASCAR changed its culture to be safety-first. Part of its changes were to install barriers along tracks that would help absorb the majority of g-forces in a crash. This Daily Downforce article walks through the history of the SAFER barriers, why NASCAR originally chose concrete, and how much of the tracks are covered today.

Listen to an in-depth conversation on the links between Parkinson's disease and herbicide exposure and the challenging pace of scientific investigation.

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

Exploring the Larry Bird punch that almost changed March Madness

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

Human-to-human transmission of hantavirus remains extremely rare, so the 2026 hantavirus cruise ship outbreak doesn't mean we're facing a COVID-style pandemic risk.

Despite being favored by 87% of Americans, Congress does not have term limits.

Larger animals like giraffes, elephants, and blue whales have developed a unique defense against cancer, a phenomenon known as Peto's Paradox

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

11 people died from firework injuries in the US in 2024.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

Comedy legend Catherine O'Hara, star of 'Schitt's Creek' and 'Home Alone,' quit 'Saturday Night Live' after just one week to return to her old job.

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

Neutron stars, the remains of some massive stars after they explode in a supernova, are the densest directly observable objects in the universe.

Pure water does not conduct electricity because this flow of energy requires the movement of charged particles, and water is a neutral molecule.