Cat Schuknecht

We don't always behave the way economic models say we will. We don't save enough for retirement. We order dessert when we're supposed to be dieting. We give donations when we could keep our money for ourselves.

Again and again, we fail to act rationally and selfishly — the way traditional economics expects us to.

We've seen this during the coronavirus crisis: People selflessly mobilizing to help each other, like the retired Kansas farmer who sent an N95 mask to New York to help a nurse or a doctor.

After a messy breakup with Europe, British Prime Minister Boris Johnson is poised to enter into a new union.

On Saturday, British media reported that Johnson, known for successfully pushing the United Kingdom to exit the European Union, is engaged to his girlfriend, Carrie Symonds. The couple is also expecting their first child.

Afghanistan's president publicly rejected the timeline for a prisoner swap with the Taliban on Sunday, just one day after the United States signed a peace deal with the militant Islamist group that proposes a March 10 deadline for an exchange of prisoners.

The peace deal, more than a year in the making, aims to end the longest war in American history.

Updated at 2:46 a.m. ET Sunday

On Friday, President Trump added former independent counsel Ken Starr to the legal team that will defend him in the Senate impeachment trial.

Starr is best known for leading an investigation into President Bill Clinton's affair with a White House intern during the 1990s.

With Jeffrey Epstein's death by apparent suicide on Saturday, his accusers lost any chance to watch him stand trial on sex trafficking and conspiracy charges brought by federal prosecutors in Manhattan last month.

But they may still have other ways to pursue justice.

Most former Dalton School students agree on at least one thing: Jeffrey Epstein was charismatic.

"If you had had him [as a teacher] then, you would've liked him, too," says Eve Scheuer Lubin, who was Epstein's student during his brief tenure as a teacher in the mid-70s. The Dalton School, where he taught, is a private school in Manhattan with a reputation for attracting talented students and affluent parents.

The murder of the Rev. James Reeb was unsolved for more than 50 years.

Then last month, using the FBI's case file, NPR identified a man who had participated in the attack on Reeb but was never arrested or charged. William Portwood died less than two weeks after reporters Andrew Beck Grace and Chip Brantley confirmed his involvement. At 87, Portwood was the last living person who could have been held to account for Reeb's murder.