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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.

Dr. Paul Kalanithi was preparing to wrap up his medical residency in neurosurgery when, in 2013, a CT scan revealed tumors throughout his body. He had stage IV lung cancer.

In his last two years of life, he continued caring for patients. He and his wife became parents. And Kalanithi, a gifted writer, wrote a book, When Breath Becomes Air, a reflection on being a doctor with a terminal illness.

He died March 9, 2015. He was 37 years old.

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!"

Last spring, Benny Smith began having epileptic seizures. In his fifth-grade English class, he fell out of his chair and found he couldn't move. It soon got so bad for the 11-year-old, in fact, that his falls even led to several concussions.

And when he'd wake up, he'd feel terrible, too — "a bit like a hangover," Benny tells his mother, Christine Ristaino, on a recent visit to StoryCorps.

Just don't ask him what a hangover feels like.

"You told it to me!" he tells her.

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.

As the Republican primary moves to South Carolina, political observers are predicting that the race could get nasty in the state that historically plays a major role in choosing the party's nominee.

"South Carolina is brutal. It's bare-knuckle. It is the toughest of tough political environments to play in," says Hogan Gidley, a former director of the South Carolina Republican Party.

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.

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