Kevin Hartnett

Senior Writer


Taming Superconductors With String Theory

The physicist Subir Sachdev borrows tools from string theory to understand the puzzling behavior of high-temperature superconductors.


Hope Rekindled for Perplexing Proof

Three years ago, a solitary mathematician released an impenetrable proof of the famous abc conjecture. At a recent conference dedicated to the work, optimism mixed with bafflement.


Math Quartet Joins Forces on Unified Theory

A new breakthrough that bridges number theory and geometry is just the latest triumph for a close-knit group of mathematicians.


The Information Theory of Life

The polymath Christoph Adami is investigating life’s origins by reimagining life as self-perpetuating information strings.

Computer Science

A New Design for Cryptography’s Black Box

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.


At Tiny Scales, a Giant Burst on Tree of Life

A new technique for finding and characterizing microbes has boosted the number of known bacteria by almost 50 percent, revealing a hidden world all around us.

foundations of mathematics

Will Computers Redefine the Roots of Math?

The Fields medalist Vladimir Voevodsky has died at 51. This 2015 article describes his computer-aided quest to eliminate human error and rewrite the century-old rules underlying all of mathematics.


A Proof That Some Spaces Can’t Be Cut

Mathematicians have solved the century-old triangulation conjecture, a major problem in topology that asks whether all spaces can be subdivided into smaller units.