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# Year in Review

## Latest Articles

### The Year in Biology

While the study of the SARS-CoV-2 virus was the most urgent priority, biologists also learned more about how brains process information, how to define individuality and why sleep deprivation kills.

### The Year in Math and Computer Science

Even as mathematicians and computer scientists proved big results in computational complexity, number theory and geometry, computers proved themselves increasingly indispensable in mathematics.

### The Year in Physics

Featuring paradoxical black holes, room-temperature superconductors and a new escape from the prison of time.

### The Year in Physics

Physicists saw a black hole for the first time, debated the expansion rate of the universe, pondered the origin of time and modeled the end of clouds.

### The Year in Biology

Researchers explored the zone between life and death, charted the mind’s system for arranging ideas and memories and learned how life’s complexity emerged.

### The Year in Math and Computer Science

Mathematicians and computer scientists made big progress in number theory, graph theory, machine learning and quantum computing, even as they reexamined our fundamental understanding of mathematics and neural networks.

### Quanta’s Science and Math Crossword Puzzle

Celebrate a year’s worth of scientific and mathematical insights by solving this brain-teasing cryptic crossword from our puzzle columnist.

### The Year in Math and Computer Science

Several mathematicians under the age of 30 left their marks all over the field, and amateur problem-solvers of all ages made significant contributions to long-dormant puzzles.

### The Year in Biology

Biologists gained new insights into life’s genomically tumultuous past, viruses as crucial components of life, the hidden talents of complex cells and basic aspects of cognition and memory.