Rebecca Hersher

A federal judge has ruled against the proposed acquisition of the health insurance company Humana by its larger rival, Aetna.

The decision is a victory for former President Obama's Justice Department, which sued Aetna last year to block the $34 billion merger, NPR's Yuki Noguchi reported.

The suit alleged that the merger would hurt competition in the health care market, leading to higher prices for consumers and fewer services for Medicare patients.

Noor Salman, the wife of the man who killed 49 people last June at the Pulse nightclub in Orlando, Fla., has pleaded not guilty to two federal charges.

Salman was arrested earlier this week and charged with providing material support to a terrorist and obstruction of justice for allegedly knowing about Omar Mateen's plan to slaughter people at the nightclub.

It was the deadliest mass shooting in modern U.S. history. Mateen was killed by police.

The online classified website Backpage.com said it has suspended its adult ad pages, citing government pressure about the content being shared there.

A 2016 Senate report called the website the "largest commercial sex services advertising platform in the United States" and said that "Backpage officials have publicly acknowledged that criminals use the website for sex trafficking, including trafficking of minors."

Mothers should feel comfortable breast-feeding infants in public, Pope Francis said on Sunday, even if they are in one of the most sacred spaces in Catholicism.

Speaking at an annual ceremony to commemorate the baptism of Jesus, the pope addressed the families of 28 infants who were to be baptized in the Sistine Chapel. Some of the babies began to wail as the ceremony wore on, according to Vatican Radio:

Updated at 8:00 p.m. ET Saturday

The U.S. Attorney has charged Esteban Santiago, the man in custody for carrying out the deadly shooting at Fort Lauderdale-Hollywood International Airport in Florida on Friday afternoon.

At least five people were killed and six others were injured in the shooting, according to the Broward County Sheriff's Office.

Former MF Global Chief Executive Jon Corzine will pay a $5 million penalty for his role in the company's collapse, according to the U.S. Commodity Futures Trading Commission.

MF Global collapsed in 2011, and hundreds of millions of dollars in customer money disappeared, as we reported.

Two Brazilian companies accused of a massive bribery scheme will pay more than $3.5 billion in fines to U.S. and Brazilian authorities.

Giraffes are dying at an alarming rate and could face extinction if the trend doesn't reverse, according to a new conservation report on animal populations worldwide.

The report was released by the International Union for the Conservation of Nature, which maintains the so-called Red List of species threatened with extinction.

Updated at 4:45 p.m. ET

The judge in the murder trial of former North Charleston, S.C., police Officer Michael Slager declared a mistrial on Monday after the jury said it could not come to a unanimous decision.

"We as the jury regret to inform the court that, despite the best efforts of all members, we are unable to come to an unanimous decision in the case of the State vs. Michael Slager," a letter from the foreman of the jury read.

Updated at 10:15 a.m. ET on Dec. 6

The chairman of the Standing Rock Sioux tribe in North Dakota is asking people camping near the route of the Dakota Access Pipeline to go home.

"I'm asking them to go," Dave Archambault III told Reuters on Monday, saying that the Obama administration "did the right thing," and that he hoped to "educate the incoming administration" of President-elect Donald Trump.

"Nothing will happen this winter," he said.

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