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Complexity Theory Problem Strikes Back
The legendary graph isomorphism problem may be harder than a 2015 result seemed to suggest.
Finding the Actions That Alter Evolution
The biologist Marcus Feldman creates mathematical models that reveal how cultural traditions can affect the evolution of a species.
Test Your Mathematical Sculpting Skills
Can you turn a two-dimensional fractal into a 3-D object? Break out your scissors and tape for a chance to win a 3-D printed sculpture.
3-D Fractals Offer Clues to Complex Systems
By folding fractals into 3-D objects, a mathematical duo hopes to gain new insight into simple equations.
On the Moon’s Far Side, Clues to a Cataclysm?
A mission to collect samples from the far side of the moon could answer questions about a barrage of asteroids nearly 4 billion years ago.
Explorers Find Passage to Earth’s Dark Age
Geochemical signals from deep inside Earth are beginning to shed light on the planet’s first 50 million years, a formative period long viewed as inaccessible to science.
In the Deep, a Drive to Find Dark Matter
Elena Aprile now leads the world’s most sensitive dark-matter search. But before she could build her first detector, she had to make herself out of titanium.
Grand Unification Dream Kept at Bay
Physicists have failed to find disintegrating protons, throwing into limbo the beloved theory that the forces of nature were unified at the beginning of time.
Teeth May Reveal a Multi-Day Biological Clock
Tiny lines laid down by tooth enamel appear to reveal a previously unknown biological rhythm. If confirmed, the finding could help researchers understand why big animals grow slower — and live longer — than small ones.