All Articles

origins of life

Early Life in Death Valley

Evidence from Southwestern deserts suggests that oxygen-breathing organisms arose on land rather than in the seas.

The arrow of time.
Physics

Time’s Arrow Traced to Quantum Source

A new theory explains the seemingly irreversible arrow of time while yielding insights into entropy, quantum computers, black holes, and the past-future divide.

A living bridge.
Biology

The Remarkable Self-Organization of Ants

Knowing the rules behind ant-made structures could help scientists understand how other complex systems emerge in nature.

neuroscience

A Fundamental Theory to Model the Mind

Support is growing for a decades-old physics idea suggesting that localized episodes of disordered brain activity help keep the overall system in healthy balance.

Q&A

A ‘Rebel’ Without a Ph.D.

A conversation with the mathematical physicist Freeman Dyson on quantum electrodynamics, climate change and his latest pet project.

Bicep2 B-modes
cosmology

Possible Echo of Big Bang Detected

Scientists report the possible discovery of primordial gravitational waves, ripples in space-time that carry a record of how the universe began.

Gravitons
theoretical physics

Betting on the Future of Quantum Gravity

New calculations suggest physicists may someday discover a fundamental theory of gravity, but it could require a radical new perspective on the universe.

evolution

Does Competition Drive Diversity of Species?

A large new study of ovenbird lineages questions the extent to which competing species push each other to evolve.

Gamma Ray Excess
astrophysics

Case for Dark Matter Signal Strengthens

A new analysis strengthens the case that gamma rays emanating from the center of the Milky Way come from dark matter particles known as WIMPs.