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The Charlotte Chess Center, where Naroditsky trained and worked as a coach, announced his death, calling him "a talented chess player, educator, and beloved member of the chess community."

China's "Tianhe-2" (Milky Way 2) supercomputer took first place in one recent speed test, clocking in at 30 quadrillion calculations per second--about twice as fast as the best American machines. The U.S. still has more supercomputers than any other nation, but some experts say computer speed is a measure of a country's scientific innovation, and worry the U.S. is lagging behind.

When Stanford professor Andrew Ng put one of his classes online, more than 100,000 students signed up. Now he's co-founded a company, Coursera, with the potential to give millions of students free access to classes from Stanford, Princeton, the University of Pennsylvania and other schools.

Here's your recap of what happened in the leadership shakeup at the Centers for Disease Control and Prevention this week.

At issue is whether the University of Texas, Austin discriminated against a white applicant when it did not offer her a spot. At Wednesday's argument, a court majority seemed poised to reverse or severely cut back previous decisions related to affirmative action programs in college admissions.

The lessons of the final deal come down to this: Washington is very nearly broken. Next up? Finishing the work this agreement postponed.

The U.S. led late in the third period, but an increasingly desperate Canadian squad scored two goals in less than four minutes. Then it put the game away in overtime.

Decisions about high blood pressure have gotten thornier over the past couple of years. There's no consensus on when to start treatment with drugs. The latest evidence adds to the confusion.

A new study by three media scholars reveals how the social protest movement spread on Twitter, with some fascinating — and sobering — findings.

Florida is one of the most competitive battlegrounds in the country, in part because of conservative seniors. Many live in Sumter County, which has the oldest median age of any county in the country.