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Twitter has begun removing millions of locked accounts from users' lists of followers, in an attempt to crack down further on social media fraud.
The move will eliminate tens of millions of frozen accounts Twitter has deemed suspicious and reduce the total combined follower count on the platform by about 6 percent.

Scientists for the first time have been able to pinpoint the source of an extremely powerful version of a neutrino, a ghostly particle that can travel virtually unimpeded through space.

It's an achievement that opens a whole new way of looking at the universe.

The neutrino was detected by a South Pole observatory called IceCube that was specifically designed to catch the particles. It consists of a cubic kilometer of ice festooned with more than 5,000 detectors.

A version of this piece ran in February 2018.

Parents today struggle to set screen time guidelines.

One big reason is a lack of role models. Grandma doesn't have any tried-and-true sayings about iPad time. This stuff is just too new.

A government watchdog agency wants NASA to come up with a contingency plan for getting American astronauts to the International Space Station.

The recommendation is one of the major takeaways in a 47-page report from the Government Accountability Office on what is known as the Commercial Crew Program.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

NOEL KING, HOST:

Russia's information attack against the United States during the 2016 election cycle sought to take advantage of the greater trust that Americans tend to place in local news.

The information operatives who worked out of the Internet Research Agency in St. Petersburg did not stop at posing as American social media users or spreading false information from purported news sources, according to new details.

They also created a number of Twitter accounts that posed as sources for Americans' hometown headlines.

Photo by Las Cumbres Observatory

Santa Barbara County astronomers have received a multi-million dollar grant to build robotic telescopes.

Goleta-based Las Cumbres Observatory known as LCO -- which has a global network of robotic telescopes -- received a nearly $5 million dollar grant from the Gordon and Betty Moore Foundation to build two more telescopes that will be located on the Canary Islands.

If there's one thing we're grateful for on Shots, it's our passionate, engaged audience. Our stories often prompt a lively response from readers and people who hear us on the radio. This was definitely the case with Monday's look at the use of permethrin-treated clothing to prevent tick bites, which can cause a lot of nasty diseases.

Summer is the season of downtime, relaxation and, hopefully, some vacation. NPR is working on a series about how technology has changed our summers. We want to hear your stories about how your vacations have been affected, for better or worse, by tech.

Your responses may be used in an upcoming story, on air or on NPR.org. A producer may reach out to you to follow up on your response, too.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

AILSA CHANG, HOST:

Have you ever noticed something most virtual assistants have in common? They all started out female.

One of the most famous, Amazon's Alexa, got her name because of CEO Jeff Bezos' preference. "The idea was creating the Star Trek computer. The Star Trek computer was a woman," says Alex Spinelli, who ran the team that created the software for Alexa.

Spinelli is now the chief technology officer of LivePerson. His boss, CEO Robert LoCascio, is bothered by that story about Alexa.

Animator, director, screenwriter, producer, songwriter — Rebecca Sugar is a true Renaissance woman.

The 30-year-old Maryland native is the force behind “Steven Universe,” the first Cartoon Network show created independently by a woman. The show is now in its fifth season and has become something of an empire.

Walla Walla County in Washington state might just be the only place on Earth where you have to brake for bees.

"You can see the signs here," says Mike Ingham, as he drives by a 20 mph speed limit sign with a smaller one below stating "Alkali Bee Area."

"There's actually a county ordinance to slow the cars down who go by here, because a speeding car can kill a lot of alkali bees," Ingham says.

This piece combines and updates two posts from spring 2018.

During the summer, it's safe to assume children are using technology more than usual.

There's new evidence to support a decades-old strategy for preventing the tick bites that lead to all sorts of nasty diseases, including Lyme disease and Rocky Mountain spotted fever.

The remedy involves spraying your clothing with permethrin — a pesticide that's chemically similar to extracts of the flowering chrysanthemum plant.

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