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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.

After a massive Boston-area manhunt for the suspect in the marathon bombings, police closed in on a boat in a Watertown backyard where the 19-year-old was hiding. The dramatic resolution came shortly after police announced they did not believe the suspect was in the area.

Shutdown and debt ceiling deadlines are fast approaching four days before the Alabama Senate election, and Republicans are trying to pass a tax plan by Christmas.

Increasingly, private equity firms shape staffing decisions at hospital emergency rooms, research shows. One apparent effect: Hiring fewer doctors and more health care practitioners who earn far less.

New York Times reporter Jim Tankersley discusses Biden's proposed $1.9 trillion economic stimulus/pandemic relief package — as well as his plans for infrastructure work and clean energy investment.

The federal government remains shut down, in what is now the longest shutdown in U.S. history. Reporters from the NPR Network are digging into the ways the government shutdown is playing out in their region.

This week, Shaboozey becomes only the second Black artist ever to top Billboard's pop and country singles charts at the same time. The first, earlier this year, was his collaborator, Beyoncé.

The pop star caught the top spot while her other single, “Espresso,” is still holding strong at No. 4 on the Billboard Hot 100. Meanwhile: yes, Taylor Swift’s The Tortured Poets Department is still No. 1 over on the Billboard 200 albums chart — we’re at week nine and counting.

Unlike most of its neighbors in the top 10, Lenae's slow-burning hit actually sounds like summer, says NPR Music's Stephen Thompson. It's a buoyant R&B throwback with a sugar rush vibe that fits in at pool parties, barbecues and beach hangs.