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Two math majors at Reed College in Portland. Ore., created a wintery masterpiece: A snowball weighing about 800 lbs. The students built it on the quad, but decide to roll it down a walk. Then the snowball took off down a hill and smashed into a dorm wall so hard it crushed it.

In blunt language that supports what the outside world has feared for decades, the U.N. High Commissioner for Human Rights says that "the gravity, scale and nature of these violations reveal a state that does not have any parallel in the contemporary world."

The Arkansas State University Concert Choir will have a unique opportunity later this week to represent the university to an audience of music students…

The school is turning to an experienced administrator. Barron has been president of Florida State since 2010. Before that, he was a dean at Penn State. He takes over a school still recovering from the 2011 scandal involving former assistant coach Jerry Sandusky's sexual abuse of young boys.

With jobs and populations growing in the cities, it's no surprise that retailers, including Wal-Mart and Target, are trying to adapt their models to suit urban areas. Competition from online stores is also contributing to a changing retail landscape.

Online pornography was the cutting edge of e-commerce during the Internet's early days, but its heyday is over. To recoup some of those costs, one porn empire in San Francisco is using data analytics, lifestyle events and new products to keep customers loyal.

Rio de Janeiro is racing to ready itself for the 2016 Summer Olympics. But it's facing difficulties: ballooning budgets, pollution, questions about the development plans and rising crime. Some wonder whether ordinary Brazilians will benefit.

"I've dug graves when it was 10 below zero and the wind blowing and snowing, and I've dug graves when it was 90 degrees and hotter than hell. I remember all of them," says Everard Hall, who's been digging with a pickax and a shovel for 48 years. This summer, he'll start digging his own grave.

The city has a lot of abandoned buildings, and to decide which ones should be demolished, the federal government and some major foundations started a massive, high-tech mapping project. The new mayor says that's just what he needs to improve the neighborhoods.

The activists say they have been taken into custody each of the past three days, then later released. They want to perform a protest song in Sochi. They were convicted of "hooliganism" for performing a "punk prayer" in Moscow in 2012. Just before the games began, the women were freed from prison.