A gunman who opened fire in a Midtown Manhattan office building believed he suffered a brain injury that he blamed on the National Football League, thrusting the issue of chronic traumatic encephalopathy (CTE) back into headlines this week.

Manhattan

A gunman who opened fire in a Midtown Manhattan office building, targeting the National Football League, believed he suffered from chronic traumatic encephalopathy (CTE), a degenerative brain disease linked to repeated head impacts. The shooter, identified as 27-year-old Shane Tamura, killed four people before taking his own life. Tamura was a former high school and varsity football player, but never played professionally. A note found in his possession claimed his football career was ended by brain injury and criticized the NFL's response to CTE.

Experts highlight that CTE is associated with aggression and dementia, and that even amateur football players face significant risks. While the NFL has implemented safety measures and settled lawsuits with former players, some researchers argue these steps are insufficient, emphasizing the need for greater attention to brain injury prevention, especially at the amateur level.

NYC office tower shooting thrusts CTE back into focus

The gunman who opened fire in a Midtown Manhattan office building, appearing to target the National Football League, believed he suffered from a degenerative brain disease known as CTE, according to officials. The shooting, which ended when 27-year-old Shane Tamura shot himself in the chest after killing four people with an assault rifle, has thrust CTE back into the national spotlight as well as its relationship to contact sports. Here's what CTE is and how it affects people who have it. Chronic traumatic encephalopathy is a traumatic brain injury that has no known treatment and has been linked to aggression and dementia. It's caused by repeated impacts to the head. Dr. Anne McKee, a professor at Boston University's School of Medicine, says playing football is directly associated with increased risk for CTE. For every 2.6 years of football play, you double your risk. I can tell you that we did a study two years ago where we looked at all the athletes who had come into the brain bank who died before their 30th year, and 71% of those were amateur athletes playing high school or college football, not pro sports. Tamura was never an NFL player, but online records show he played football at his California high school and was a varsity player at a Los Angeles charter school until graduating in 2016, according to school sports databases. Bloomberg News reported that the note found in his wallet said his football career was cut short by his brain injury and that the NFL had not done enough to address CTE in the sport. You know, it's possible he had CTE, he did have the exposure, but it's also possible he didn't have CTE and it was a mental health disorder unrelated to football. Concussions fell to a record low during the most recent NFL season, with the league crediting improvements in helmet technology as well as rule changes for the decline. But some researchers, including McKee, have said the measures fall short. It is time to address this. This is a public health concern. There's an urgent need to address this at the amateur level. I don't think any parent would want their child to get brain damage as a result of playing sport, and that's really what it boils down to, preventing brain damage. The NFL has paid more than $1 billion to settle concussion-related lawsuits with thousands of retired players after the deaths of several high-profile players in the top professional American football league.

Australia said on Wednesday (July 30) it will add YouTube to sites covered by its world-first ban on social media for teenagers, reversing an earlier decision to exempt the Alphabet-owned video-sharing site and potentially setting up a legal challenge.

Canberra

Australia expands teen social media ban to YouTube

President Donald Trump said on Wednesday (July 30) the United States will impose a 25% tariff on goods imported from India, as well as an unspecified penalty for buying Russian weapons and oil, on Aug. 1.

Washington

Global Tariffs

Trump says U.S. to hit India with 25% tariff starting August 1

Mourners flooded the streets of Birmingham to celebrate the life of rock-and-roll legend Ozzy Osbourne during his funeral procession in the United Kingdom. Mark Savage, a music reporter at the BBC, a CBS News partner, joins with more details.

Birmingham

Ozzy Osbourne fans flood Birmingham streets to mourn late music icon

U.S. President Donald Trump told reporters before departing from Scotland that Jeffrey Epstein poached workers from his Mar-a-Lago spa. Trump mentioned Virginia Giuffre, one of Epstein's most vocal accusers, in his latest remarks.

Trump says Epstein 'stole' young women from Mar-a-Lago spa

Owdeh Hathaleen, a 31-year‑old Palestinian activist, teacher, and filmmaker behind the Oscar-winning documentary No Other Land, was shot dead by an Israeli settler near the village of Umm al‑Khair in the South Hebron Hills.

Jerusalem

Middle East Conflict

Palestinian activist killed by Israeli settler in West Bank

A powerful magnitude 8.8 earthquake off Russia's Far Eastern Kamchatka Peninsula triggered tsunami waves of up to 16 feet nearby, and sparked evacuation orders in Japan, Hawaii and across the Pacific on Wednesday (July 30).

Hawaii

Tsunami reaches Hawaii after huge quake shakes Russia's Far East

The U.N. General Assembly brought high-level officials together to promote a two-state solution to the decades-old Israel-Palestinian conflict. Israel and the United States are boycotting the two-day meeting, co-chaired by the foreign ministers of France and Saudi Arabia

New York

Israel and U.S. boycott UN Summit for two-state solution

With numerous countries facing an Aug. 1 trade agreement deadline, officials in the Trump administration say China could get an extension while negotiations continue.

Trump officials suggest potential tariff truce with China

Police say the man who shot and killed four people in a New York City office building before he took his own life had a "documented mental health history." Mayor Eric Adams says he may have been targeting the National Football League (NFL).

Manhattan gunman had 'documented mental health history'

Jeffrey Epstein-associate Ghislaine Maxwell is offering to testify before Congress in exchange for concessions like full immunity. CBS News Department of Justice reporter Jake Rosen has more.

Ghislaine Maxwell offers to testify before Congress

Prime Minister Keir Starmer said on Tuesday (July 29) Britain was prepared to recognize a Palestinian state in September at the United Nations General Assembly unless Israel takes a number of steps to improve life for Palestinians.

London

UK to recognize Palestinian state unless Israel takes action

Russia launched overnight air strikes on over 70 Ukrainian cities, killing more than 20 people, according to President Zelenskyy. A pregnant woman died near a hospital in the southeast, while a prison strike killed at least 17.

Kyiv

Ukraine Invasion

Deadly Russian air raids hit Ukraine as Trump warns of sanctions

For the first time, human rights groups inside Israel are accusing their own government of committing genocide in Gaza. Israel insists it is targeting Hamas, not civilians—despite nearly 60,000 Palestinian deaths since the war began almost two years ago.

Rights groups in Israel accuse country of genocide

As Gaza’s crisis worsens, France is advocating for a two-state solution at a UN conference co-chaired by the French foreign minister. The meeting follows President Macron’s announcement that France will formally recognize a Palestinian state in September.

France leads UN talks on Israel-Palestine two-state solution

Former Colombian President Álvaro Uribe was found guilty of bribery and witness tampering in an unprecedented trial that has shaken the country.

Bogotá

Ex-Colombian president Uribe convicted of witness tampering, bribery

Russian Security Council Deputy Chairman Dmitry Medvedev posted on social media that President Trump's deadline push for a ceasefire with Ukraine is "a threat and a step towards war."

Moscow

Russian official calls Trump's ceasefire deadline 'a threat'

Ukraine says Russia's overnight air strikes hit a prison in Zaporizhzhia in the southeast, killing at least 17 people. Another 35 were injured. Authorities say the attacks destroyed the jail buildings and damaged several nearby houses.

Zaporizhzhia

Russian air strikes hit a prison in Ukraine's Zaporizhzhia, 17 killed

Russia launched yet another attack on Ukraine overnight, with more than 300 drones and seven missiles. While most of the barrage was intercepted, the attacks prompted President Trump to give his Russian counterpart an ultimatum.

Trump gives Putin new deadline to end Ukraine war

A gunman killed at least one police officer and shot a handful of other people Monday in the heart of New York City. CBS News New York has the latest details.

Gunman kills police officer, wounds others in Midtown Manhattan

The suspect in the Michigan Walmart stabbing attack that injured 11 people over the weekend pleaded not guilty Monday to terrorism and assault charges.

Traverse City

Suspect pleads not guilty in Walmart stabbing attack

The U.S. Department of Justice says it took down child abuse websites that had more than 120,000 members and contained millions of files. CBS News' Scott MacFarlane explains how the arrest of one suspect nicknamed "Boss" was a huge priority for the FBI.

U.S. Justice Dept. shuts down four child abuse websites

Five people, including security guards, were killed by a gunman at Bangkok's Or Tor Kor market on Monday. The shooter, who injured two others, later killed himself, according to authorities.

Bangkok

Gunman kills five at busy Bangkok fresh food market

Thailand and Cambodia have agreed to an “unconditional” ceasefire starting at midnight, Malaysian Prime Minister Anwar Ibrahim said on July 28, a significant breakthrough to resolve five days of deadly border clashes.

Kuala Lumpur

Thailand and Cambodia agree to ceasefire

Truckloads of food reached hungry Gazans on July 28 after Israel promised to open secure aid routes, but humanitarian agencies warned vast amounts more were needed to stave off starvation.

Food arrives in Gaza after Israel pauses some fighting

Top U.S. and Chinese economic officials will resume talks in Stockholm to try to tackle longstanding economic disputes at the center of a trade war, aiming to extend a truce by three months and keeping high tariffs at bay.

Stockholm

U.S.-China trade truce extension seen, may ease way for Trump-Xi meet

A train derailment in southern Germany killed at least three people and injured others. The cause is under investigation, with weather possibly a factor.

Riedlingen

German train derails, killing at least three people

Israel has agreed to limit fighting in parts of Gaza and would allow more aid into the region, but both moves are facing criticism for being too little too late.

Israel announces daily pauses in Gaza fighting as aid trickles in

Abnormally high temperatures combined with heat and drought have fuelled destructive wildfires in parts of Europe, forcing thousands to be evacuated.

Athens

Heat fuels destructive wildfires in parts of Europe

Michigan officials say they will file terrorism charges and 11 charges of assault with intent to murder against the man who allegedly carried out a knife attack at a Walmart on Saturday. Lana Zak reports.

Garfield Township

Suspect in Michigan stabbing rampage to face terrorism charges

FAA investigators are in Denver after passengers and crew aboard an American Airlines flight were forced to evacuate when a tire blew during takeoff and the plane's rapid deceleration caused a brake fire, the airline said. Elise Preston reports.

Breakdown