
Does Quantum Mechanics Rule Out Free Will?
Superdeterminism, a radical quantum hypothesis, says our “choices” are illusory

Does Quantum Mechanics Rule Out Free Will?
Superdeterminism, a radical quantum hypothesis, says our “choices” are illusory

Time Crystals Made of Light Could Soon Escape the Lab
A new, more robust approach to creating these bizarre constructs brings them one step closer to practical applications


100 Years Ago, a Quantum Experiment Explained Why We Don’t Fall through Our Chairs
The basic concept of quantum spin provides an understanding of a vast range of physical phenomena

The High-Speed Physics of Olympic Sledding, Explained
There is more to the bobsled, luge and skeleton events than merely sliding down steep, icy slopes

Turbulence Equations Discovered after Century-Long Quest
The formulas describe the complex behavior of a liquid when it meets a boundary

Does Quantum Mechanics Reveal That Life Is But a Dream?
A radical quantum hypothesis casts doubt on objective reality

Poem: ‘Elective Affinities: Ghazal of the Muon’
Science in meter and verse

What Is Spacetime Really Made Of?
Spacetime may emerge from a more fundamental reality. Figuring out how could unlock the most urgent goal in physics—a quantum theory of gravity

How Measuring Time Shaped History
From Neolithic constructions to atomic clocks, how humans measure time reveals what we value most

ArXiv.org Reaches a Milestone and a Reckoning
Runaway success and underfunding have led to growing pains for the preprint server

Can Quantum Mechanics Quell the Holiday Blues?
Scientists search for hidden variables underpinning our swerving moods and thoughts

On the Heels of a Light Beam