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A high school social studies teacher who fired a gun inside his Georgia classroom in February, hitting a window and alarming students and staff just days after the Parkland, Fla., shooting massacre, was sentenced on Tuesday to two years in prison, followed by eight years probation, according to Conasauga Judicial Circuit District Attorney Bert Poston.

Walter Carr didn't panic, he made a plan.

When people think of particle accelerators, they tend to think of giant structures: tunnels many miles long that electrons and protons race through at tremendous speeds, packing enormous energy.

But scientists in California think small is beautiful. They want to build an accelerator on semiconductor chips. An accelerator built that way won't achieve the energy of its much larger cousins, but it could accelerate material research and revolutionize medical therapy.

First of all, what is an accelerator?

Former White House press secretary Sean Spicer has words of praise for Sarah Sanders, his successor on the podium, and says she has figured out how to please President Trump in the job in a way he struggled to do.

"I think Sarah has done a great job of making sure that she understands what the president wants," Spicer told NPR's Mary Louise Kelly in an interview on Wednesday in advance of next week's release of his book The Briefing: Politics, the Press and the President.

The Terminator's killer robots may seem like a thing of science fiction. But leading scientists and tech innovators have signaled that such autonomous killers could materialize in the real world in frighteningly real ways.

During the annual International Joint Conference on Artificial Intelligence in Stockholm on Wednesday, some of the world's top scientific minds came together to sign a pledge that calls for "laws against lethal autonomous weapons."

Composer Sawan Dutta had scored the music for two Bollywood movies. After meetings with movie executives, long nights in the studio, these two projects would be her most high-profile work yet. And then, disaster. One film lost distribution. The other lost its mega-star talent.

The scores? Left unheard, abandoned on a hard drive.

But Dutta turned her frustration into The Metronome Song Vlog, India’s longest-running song videoblog, or vlog. Now she’s a viral internet sensation.

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More than a year after a landslide shut it down, a section of Highway 1 running along a coastal stretch in California's Big Sur region reopened early Wednesday.

The California Department of Transportation announced that the roadway at Mud Creek was opening about two months ahead of schedule, thanks to favorable weather and worker productivity.

"It's a big deal to open the highway unrestricted," Colin Jones, a Caltrans spokesman told NPR.

Earlier this week, Guns N' Roses' video for "November Rain" hit a curious milestone: Released in 1992, it's the oldest video ever to be streamed a billion times on YouTube.

Nicaragua is living an Orwellian nightmare.

Over the past three months, Daniel Ortega's government of "reconciliation and national unity" has killed more than 300 people, injured thousands and abducted and disappeared hundreds more. Sandinista "death caravans" of hooded police and government paramilitaries raid towns like hordes of invading Huns, firing battlefield weapons at unarmed protesters, dragging people from their homes, torching buildings and leaving dead bodies in the street.

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