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Arms Control in Cyberspace Evokes Challenges of Nuclear Treaties
Hacking has become a powerful new weapon and espionage tool for nations such as the U.S. and China. Now President Obama and other policymakers are struggling with how to create international frameworks to govern the use of such techniques.

India Replaces China as Next Big Frontier for U.S. Tech Companies
For many years U.S. tech companies have coveted but struggled to reach China’s vast population of Internet users. With China loath to loosen Internet controls, Google, Facebook, and others are now investing heavily in India, where online life is less regulated.

That Big Security Fix for Credit Cards Won’t Stop Fraud
The rollout of cards with chips to U.S. consumers is costing upwards of $200 million. Unfortunately, U.S. card issuers have chosen a flawed version of this technology.

The Simulator Bringing Movement to Virtual Reality
Virtual reality headsets can fool your eyes but not your physical sense of motion. A robot that moves you around a room using cables can add a dash of physical reality to virtual experiences.

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The Steiner tree problem:  Connect a set of points with line segments of minimum total length.
The Steiner tree problem:  Connect a set of points with line segments of minimum total length.

The 50-year-old problem that eludes theoretical computer science

A solution to P vs NP could unlock countless computational problems—or keep them forever out of reach.

section of Rima Sharp captured by the LRO
section of Rima Sharp captured by the LRO

The moon didn’t die as early as we thought

Samples from China’s lunar lander could change everything we know about the moon’s volcanic record.

conceptual illustration of a heart with an arrow going in on one side and a cursor coming out on the other
conceptual illustration of a heart with an arrow going in on one side and a cursor coming out on the other

Forget dating apps: Here’s how the net’s newest matchmakers help you find love

Fed up with apps, people looking for romance are finding inspiration on Twitter, TikTok—and even email newsletters.

ASML machine
ASML machine

Inside the machine that saved Moore’s Law

The Dutch firm ASML spent $9 billion and 17 years developing a way to keep making denser computer chips.

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Illustration by Rose WongIllustration by Rose Wong

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