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Artificial intelligence is increasingly becoming part of everyday life: think Apple's Siri. Major tech firms formed a group to help the public understand AI and develop standards so it isn't misused.

Police took nearly an hour to respond to a 911 call from a woman who said her mentally ill brother was acting erratically. About a minute after officers arrived on Tuesday, one shot and killed him.

Most potential Alzheimer's drugs are tested on mice. But rats may be a better choice because they seem to have a type of memory that's more like ours, and also are highly vulnerable to Alzheimer's.

Witness Mark Cardona describes the scene of a commuter train crash near the Hudson River. Nancy Solomon of member station WYNC also reports what she's seeing and hearing.

A voucher awarded to a company that finds a treatment for a rare childhood disease can be sold to the highest bidder and then used to fast-track the review of another drug. Are the prizes worth it?

Regulators have voted to expand cellphone alerts to 360 characters from the previous cutoff at 90 and to begin including clickable URLs and phone numbers over the next year or so. But no photos yet.

Arnold's latest film, which won the Jury Prize at the 2016 Cannes Film Festival, tells the story of a group of abandoned teenagers who travel together selling magazine subscriptions door-to-door.

Shimon Peres spent his final years as a grandfatherly figure, using social media to urge young Israelis toward his optimistic vision of peace. They liked him — but some were skeptical of his message.

Decades ago, a researcher came up with 28 days as the ideal length of stay for inpatient alcoholism rehab, despite lack of evidence that it worked. That model is now being used for opioid addiction.

Correspondents, editors and producers from NPR's newsroom share the pieces that have kept them reading.