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Top articles of 2021

Catch up on our 10 most popular articles of the year.

06/29/21

What is a photon?

The fundamental particle of light is both ordinary and full of surprises.

01/12/21

The status of supersymmetry

Once the most popular framework for physics beyond the Standard Model, supersymmetry is facing a reckoning—but many researchers are not giving up on it yet.

07/27/21

How to be human in physics

Four physicists share their experiences dealing with major setbacks, trauma, mental health issues and toxic work environments.

02/02/21

What is luminosity?

Later this decade, the Large Hadron Collider will be upgraded to the High-Luminosity LHC. What does “luminosity” mean in particle physics?