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In September of last year, a Flint pediatrician released stark findings about her city: the percentage of children age 5 and under with elevated levels of lead in their blood had nearly doubled since the city switched its water source a year and a half earlier.

The superintendent of Flint Community Schools, Bilal Tawwab, was listening. Even small amounts of lead can affect children's behavior and intelligence over time. With that in mind, he decided to keep the city's water out of his schools.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

In 1054, Pope Leo IX excommunicated the patriarch of Constantinople, an occasion that would go down in history as the beginning of the "Great Schism" between the Roman Catholic and Eastern Orthodox churches.

With the 1,000-year anniversary of the split just a few short decades away, Pope Francis and Patriarch Kirill of Moscow and All Russia will meet Friday in Havana as they attempt to bury the hatchet.

As Bernie Sanders sees it, Wall Street got a big boost when U.S. taxpayers bailed out some of the largest financial institutions in 2008. Now it's time for Wall Street to return the favor.

Sanders has proposed something he calls a speculation tax, a small levy on every stock, bond or derivative sold in the United States.

The revenue would go toward free tuition at public colleges and universities and would also be used to pare down student debt and pay for work-study programs, as well as other programs, Sanders says.

Just ahead of Valentine's Day, we visited the tomb of a poet who wrote often of love.

The 14th century Persian poet Hafez is buried in Shiraz, the city where he lived almost 700 years ago. He remains venerated in Iran, even though he wrote of romance and other topics that are not obviously embraced in the modern-day Islamic Republic.

One of his lines: "Oh Cup-bearer, set my glass afire with the light of wine!"

A private funeral is being held today in Fiumicello, the northern Italian hometown of a doctoral student whose badly battered body was found Feb. 3 on the outskirts of Egypt's capitol, Cairo.

The case has sparked outrage among Italians — who suspect Egyptian security forces were involved.

The director of the federal government team that interrogates key terrorism suspects has a message for people who want to see a return to waterboarding and other abusive strategies: they don't work.

Frazier Thompson, who leads the High-Value Detainee Interrogation Group, said research demonstrates "rapport-based techniques elicit the most credible information."

In an interview at FBI headquarters this week, Thompson added: "I can tell you that everything that we do is humane, lawful and based on the best science available."

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Transcript

KELLY MCEVERS, HOST:

The defiant leader of the anti-federal lands movement, Nevada rancher Cliven Bundy, is now facing multiple felony charges — including conspiracy and assault on a federal officer — in the 2014 standoff at his Nevada ranch.

Bundy, who inspired the occupation of Malheur National Wildlife Refuge, was arrested at the airport in Portland, Ore., last night, apparently on his way to Malheur.

In a 32-page criminal complaint, prosecutors allege Bundy and his co-conspirators led a massive, armed assault against federal officers in April 2014 near the town of Bunkerville, Nev.

If you've ever seen what a Neanderthal is supposed to have looked like, it might be hard to imagine mating with one. But modern humans did. We know because, a few years ago, scientists found stretches of Neanderthal DNA in living humans.

And now there's evidence, from a study published Thursday in Science, that some of that DNA might help shape our health.

A string of attacks on cities, schools and workplaces has prompted many employers to turn to a new area of security for their employees: active-shooter training.

Until about a decade ago, workplace security focused mostly on preventing theft. Now, businesses are trying to give their employees guidelines on how to escape or handle armed intruders.

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