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The solution to this month’s puzzle uses both mathematics and psychology to explain trouble with choosing the fastest route.

In the drive to safeguard data from future quantum computers, cryptographers have stumbled upon a thin red line between security and efficiency.

When there are two paths to your destination, why does it always seem like you’re on the road with more traffic?

A recent cryptographic breakthrough has proven difficult to put into practice. But new advances show how near-perfect computer security might be surprisingly close at hand.

The mathematician John Horton Conway’s myriad accomplishments — including the Game of Life, sprouts and the surreal numbers — are the product of a mind at play.

The solution to this month’s puzzle examines the use of abstract probabilities as an antidote to real-world ignorance.

For more than 50 years, the mathematician Neil Sloane has curated the authoritative collection of interesting and important integer sequences.

How do you solve probability problems that appear to have more than one correct answer?

Computers can translate French and prove mathematical theorems. But can they make deep conceptual insights into the way the world works?