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Tens of millions of people across East Asia braved a severe cold snap Wednesday as subzero temperatures and heavy snow brought travel chaos during the Lunar New Year holiday, with climate experts warning that such extreme weather events had become the "new norm."

ChatGPT, an AI-powered chatbot that interacts with users and can provide lengthy and thorough responses to questions and prompts, is stunning users. Professor Scott Galloway from NYU Stern School of Business joins CNN's Anderson Cooper to discuss.

India's Adani Group on Wednesday denounced allegations of fraud made by US-based short seller Hindenburg Research as "baseless" and a "malicious combination of selective misinformation."

Brazil's Supreme Court Justice Alexandre de Moraes fined the messaging app Telegram on Wednesday for not suspending the account of a far-right elected official and social media influencer, according to a statement from the Supreme Court.

Even in disarray, the message ends up being one of unity.

Germany confirmed it will send a long-demanded contingent of Leopard 2 tanks to Ukraine in a major sign of support for Kyiv that will be matched by the United States.

An iceberg nearly the size of Greater London broke off the Brunt Ice Shelf in Antarctica on Sunday according to the British Antarctic Survey.

Drone footage from Antarctica shows the massive scale of an ice shelf that just broke off from Antarctica.

A sled team in Brule, Wisconsin is preparing for one of their biggest races of the year; joining them, is their all-star sled dog "Wildfire" that has been on the road to recovery after a tragic snowmobile accident last winter. CNN's affiliate KBJR reports.

At first, Brandon Tsay froze when a gunman aimed a firearm at him, he said. He was sure those would be his last moments.

The roughly 12 classified documents found at the Indiana home of former Vice President Mike Pence included materials described as background briefing memos that were prepared for Pence's foreign trips, multiple sources told CNN.

The United States and Germany announced they are sending Abrams and Leopard 2 tanks to Ukraine. CNN's John King speaks with Retired Lt. Gen. Mark Hertling on when the tanks will be ready for use.

It's been a problem for the ages but Cameroonian soccer great Samuel Eto'o appears determined to stamp it out.

Fans and pundits alike expected a Polish player would compete in the semifinal of this year's Australian Open -- but possibly not an unseeded one.

The campaign of embattled Rep. George Santos (R-NY) filed updated reports with federal regulators that appear to raise fresh questions about the source of the substantial personal loans he said he made to his campaign. CNN's Jessica Dean has the details.

NATO Secretary-General Jens Stoltenebrg reacts to Russia's response following Germany's announcement that it will send Leopard 2 tanks to Ukraine.

Diplomatic efforts to prevent Iran developing a nuclear weapon should restart, said International Atomic Energy Agency chief Rafael Grossi, who warned that Tehran has amassed enough material for "several nuclear weapons."

In a distinguished 30-year career with London's Metropolitan Police, Dal Babu has seen his fair share of shocking behavior.

Germany has confirmed that it will send Leopard 2 tanks to Ukraine following weeks of diplomatic pressure. Chancellor Olaf Scholz announced the move in a cabinet meeting, according to federal government spokesman Steffen Hebestreit. CNN's Fred Pleitgen has more on Russia's response.

A lawyer for former Vice President Mike Pence discovered about a dozen documents marked as classified at Pence's Indiana home last week, and he has turned those classified records over to the FBI, multiple sources familiar with the matter told CNN.

CNN's International Diplomatic Editor, Nic Robertson, looks ahead at some of the problems the Russian president is facing in 2023.

The man suspected of killing four people at a California mushroom farm and three others at a nearby site had legal possession of a semi-automatic weapon that was registered to him, San Mateo County Sheriff Christina Corpus said.

House Speaker Kevin McCarthy on Tuesday officially denied Democratic Reps. Adam Schiff and Eric Swalwell seats on the House Intelligence Committee.

Former Trump White House official Alyssa Farah Griffin speaks with CNN's Anderson Cooper about the discovery of about a dozen documents marked classified in former Vice President Mike Pence's Indiana home last week.

Newly surfaced video shows embattled Republican Congressman George Santos making more questionable claims during an interview with Rádio Novelo research director Flora Thomson-DeVeaux.

[Breaking news update, published at 8:10 p.m. ET]

Germany is set to send its Leopard 2 tanks to Ukraine after United States officials revealed that the Biden administration is finalizing plans to send US-made tanks to Ukraine. Democratic Sen. Richard Blumenthal joins CNN's Wolf Blitzer to discuss the importance of these developments.

A lawyer for former Vice President Mike Pence discovered about a dozen documents marked as classified at Pence's Indiana home last week, and he has turned those classified records over to the FBI, multiple sources familiar with the matter told CNN.

Emergency responders in the Houston area are responding to reports of damage and stranded motorists after a possible tornado moved through the area. CNN's Rosa Flores is on the scene in Texas.

It's that quintessential American quirk -- the split second, instinctive glance around a Walmart, a place of worship, a supermarket or a workplace for an escape route should the worst happen.

The Doomsday Clock has been ticking for exactly 75 years. But it's no ordinary clock.

Fulton County District Attorney Fani Willis suggested Tuesday that the special grand jury investigating Donald Trump and his allies' efforts to upend the 2020 election in Georgia has recommended multiple indictments and said that her decision on whether to bring charges is "imminent."

Convicted child sex trafficker Ghislaine Maxwell has said a decades-old photograph of Prince Andrew with his sexual abuse accuser Virginia Giuffre is "fake," in a series of interviews from prison.

Despite recent mass shootings in California, Buffalo, Uvalde, and Tulsa, Americans are pessimistic that new gun safety laws will pass Congress because of partisan polarization. But even in the mythical gun-loving wild west, sheriffs wouldn't allow guns into town. David Yamane, a gun-owning sociologist, discusses with Reality Check's John Avlon the disconnect between gun mythology in America and its gun culture today.

The 72-year-old man suspected of killing 11 people and wounding nine others in a shooting at a dance studio in Monterey Park, California, Saturday had previously frequented the establishment, sources told CNN.

Authorities in Northern California are working to determine the motive of a suspect they said killed seven people and injured one in two separate areas of a small coastal city, becoming one of at least three communities in the state to mourn lives lost to mass shootings in three days.

Poland has formally asked for approval from Germany to transfer German-made Leopard 2 tanks to Ukraine, and Berlin has received the request, the Polish defense minister announced Tuesday.

Japan's prime minister issued a dire warning about the country's population crisis on Monday, saying it was "on the brink of not being able to maintain social functions" due to the falling birth rate.

At least seven people were killed and one person critically injured Monday in shootings at two separate locations in a small coastal community in central California, becoming the state's second mass shooting in three days, officials said.