technology

Science, Tech & Environment

Your total is $57.67 — will that be cash, credit or phone?

Magnetic-stripe credit and debit cards are like catnip for hackers, who have been broken into retailers like Target and Home Depot and installed malicious software on their cash registers. Now, chip-based cards are becoming more common in the US and are expected to grow rapidly in the coming year. Then there's Apple Pay, a mobile payment system that eliminates cards entirely. Where is this all heading?

Conflict & Justice

New York City's hijacked hashtag launches a global conversation on police brutality

Updated

When the New York Police Department encouraged its followers on Twitter to share photos of themselves with NYPD officers, the result was not what they expected. Two days later, the hashtag has been mimicked in a half dozen cities around the world to showcase police brutality. But the social media effort has had another consequence: it has started a global dialogue about the perception of police and policing in different cities.