# Archive

## Latest Articles

### An Easy-Sounding Problem Yields Numbers Too Big for Our Universe

Researchers prove that navigating certain systems of vectors is among the most complex computational problems.

### A Century Later, New Math Smooths Out General Relativity

Mathematicians prove a theorem that illuminates the geometry of universes with tiny amounts of mass.

### The New Quest to Control Evolution

Modern scientists aren’t content with predicting how life evolves. They want to shape it.

### Evolving Bacteria Can Evade Barriers to ‘Peak’ Fitness

Paradoxically, natural selection can sometimes seem to block organisms from evolving useful adaptations. But a new study of “fitness landscapes” and antibiotic resistance in bacteria shows that life still finds a way.

### Meet Strange Metals: Where Electricity May Flow Without Electrons

For 50 years, physicists have understood current as a flow of charged particles. But a new experiment has found that in at least one strange material, this understanding falls apart.

### Pierre de Fermat’s Link to a High School Student’s Prime Math Proof

How Fermat’s less famous “little theorem” got mathematicians young and old to play with prime-like Carmichael numbers.

### In the Gut’s ‘Second Brain,’ Key Agents of Health Emerge

Sitting alongside the neurons in your enteric nervous system are underappreciated glial cells, which play key roles in digestion and disease that scientists are only just starting to understand.

### Researchers Refute a Widespread Belief About Online Algorithms

Three computer scientists have disproved a long-standing conjecture about a fundamental problem involving imperfect information.

### The Astonishing Behavior of Recursive Sequences

Some strange mathematical sequences are always whole numbers — until they’re not. The puzzling patterns have revealed ties to graph theory and prime numbers, awing mathematicians.