Karen Keating's eighth-grade English students at Lower Dauphin Middle School in Hummelstown, Pa., fire up their laptops and gather a bundle of snowball microphones. With the click of a mouse, their laptops become studios, and they're ready to record.

Keating's class is writing, producing and editing podcasts that they'll submit to the NPR Student Podcast Challenge, and, like many teachers, Keating is using apps to help them make it happen.

The music sounds, at first, like it belongs in a power yoga studio: electronic and rhythmic, rising and falling like breaths. But then a higher pitch juts into the mix, and the strains of sound diverge, becoming faster-paced and a bit more like electronic dance music. The rise and swell fluctuates, not entirely predictable. The artists at work are, ostensibly, plants: a philodendron, two schefflera and a snake plant.

Companies around the world are embracing what might seem like a radical idea: a four-day workweek.

The concept is gaining ground in places as varied as New Zealand and Russia, and it's making inroads among some American companies. Employers are seeing surprising benefits, including higher sales and profits.

The Democratic presidential primary is heading west for the third contest in the 2020 race. Nevada Democrats are hoping their caucuses avoid similar problems that plagued Iowa earlier this month.

Follow NPR's coverage for the latest updates, analysis and results as the caucuses get underway.

Florida is planning a major expansion of its highways with a series of toll roads that would open new parts of the state to development.

Exactly where the roads will go hasn't been announced yet, but opposition to the highways is growing in rural areas such as Jefferson County in North Florida. Mike Willis' family has lived there since before Florida became a state. He likes to refer to it as, "the other Florida. Most people think of Florida as palm trees, white sandy beaches," he says. "We have rolling clay hills and beautiful pine forests."

The Trump administration has revived the debate over "end-to-end encryption" — systems so secure that the tech companies themselves aren't able to read the messages, even when police present them with a warrant.

"It is hard to overstate how perilous this is," U.S. Attorney General William Barr said in a speech last fall. "By enabling dangerous criminals to cloak their communications and activities behind an essentially impenetrable digital shield, the deployment of warrant-proof encryption is already imposing huge costs on society."

A few dozen volunteers are spending a Saturday morning in a hotel conference room in Macon, Ga., for a boot camp of sorts on fighting voter suppression.

"We are walking into a year that's going to be exciting, a little bit stressful," explains Hillary Holley, organizing director for Fair Fight Action. The group is waging a campaign against voter suppression in the 2020 election.

"We're gonna be working a lot, but we're ready for it," she says.

China reported 889 new cases of novel coronavirus infection on Friday, including more than 200 from a prison, and an additional 118 deaths – all but three in the province of Hubei, bringing the total deaths in the country to more than 2,200.

The latest count came as South Korea, with the highest number of cases outside China, reported another jump in infections to 204.

And residents clashed with police in a central Ukrainian town where evacuees from Wuhan, the Chinese province where the epidemic began, arrived for a two-week quarantine.