Jellyfish didn’t need novel genes to take an evolutionary leap in complexity.

Dark matter may occasionally interact with minerals in the earth, leaving telltale tracks that physicists hope to decipher.

The same codes needed to thwart errors in quantum computers may also give the fabric of space-time its intrinsic robustness.

A primordial developmental toolkit shared by all vertebrates, and described by a theory of the mathematician Alan Turing, sets the growth pattern for all types of skin structures.

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

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.

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.

The field of fundamental physics is experiencing both a period of confusion and an openness to new ideas.

Throughout nature, throngs of relatively simple elements can self-organize into behaviors that seem unexpectedly complex. Scientists are beginning to understand why and how these phenomena emerge without a central organizing entity.