NPR Staff

Updated at 7:58 p.m. ET

Newly discovered emails being examined by the FBI in relation to Hillary Clinton's email server came to light in the course of an unrelated criminal investigation of Anthony Weiner, a source familiar with the matter tells NPR's Carrie Johnson.

Weiner is the estranged husband of close Clinton aide Huma Abedin; he has been under scrutiny for sending illicit text messages to an underage girl. Sources said authorities seized electronic devices in their home, which led them to this new information.

Protests against the Dakota Access Pipeline have been raging for months, but tensions have been escalating. Recently, tribal leaders — led by Standing Rock Sioux Tribe Chairman Dave Archambault II — called on the Department of Justice to look into what they describe as unnecessary use of force by state and local law enforcement.

After a bruising career in the rough and tumble NHL, who could blame a guy for wanting to take it easy? At age 55, Wayne Gretzky is still playing charity games with other old timers, but "I'm getting older and slower," he says with a laugh.

Along the border between the U.S. and Mexico, armed groups on patrol — mostly men — look for illegal immigrants and drug traffickers. They're not U.S. Border Patrol, but regular people who've decided to take matters into their own hands.

They call themselves militias. Groups such as these have been around for decades, but they exploded in number after Barack Obama was elected president. Today, there are 276 militia groups around the country, according to the Southern Poverty Law Center.

Cori Bargmann's new job description includes "to help cure, prevent or manage all diseases by the end of the century." That's quite a lofty goal.

Bargmann is a neuroscientist and president of science for the Chan Zuckerberg Initiative, the joint venture of pediatrician Priscilla Chan and Facebook co-founder Mark Zuckerberg. The couple pledged $3 billion to solve major medical problems by helping scientists and engineers collaborate long term, over 25, 50, even 80 years.

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