Kaveh Waddell

Lucas Jackson/Reuters

What Happens If a Nuclear Bomb Goes Off in Manhattan?

A computer model is in the works to simulate how New Yorkers would respond in the the first 30 days after a nuclear attack.

Jonathan Alcorn/Reuters

Amazon Wants to Scan Your License Plate

Identifying cars would help it speed up pickup times at brick-and-mortar stores—but it could use the information to track your location.

Andres Kudacki/AP

Why New Yorkers Received a Push Alert About a Manhunt

The city has never before used the emergency system the way it did Monday morning.

Ted S. Warren / AP

The Controversy Baked In to 'Nextdoor'

The social-networking site is helping Seattle’s cops dive deeper into the communities they serve—but the platform can stoke neighborhood paranoia and social stigma.

Pierre Lecourt/Flickr

Will New York City's Free Wi-Fi Help Police Watch Users?

The city is building the biggest and fastest free network in the country—but it could put low-income users' privacy at risk.

Steve Marcus / Reuters

Your Phone Is Listening to Your TV

All in the name of serving you more targeted ads.

Edward Linsmier/Getty Images

Worried About Climate Change, South Florida Wants Statehood

Money and politics have divided Florida for decades, but the rising sea level has finally prodded the south into action.

Paula Bronstein/Getty Images

Are Hong Kong's Protests Peaceful to a Fault?

Research shows that nonviolent demonstration is more likely to get a movement’s message out. But what if your protest is too peaceful?

Michael B. Thomas/AFP/Getty images

Here's What the Justice Department Wants to Investigate in Ferguson

The probe will examine the local police department’s use of deadly force and protocols for stops, searches, and arrests.