In Theory

Art for "What Are Feynman Diagrams?"
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What Are Feynman Diagrams?

The physicist Richard Feynman devised a system of line drawings that simplified calculations of particle interactions and helped rescue the field of quantum electrodynamics.


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Peter and Rosemary Grant explain how our understanding of evolution has changed in their lifetimes.

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Miranda Cheng: A Moonshine Master Toys With String Theory

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Miranda Cheng explains what umbral moonshine is and how it might illuminate string theory.

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David Kaplan explains how the law of increasing entropy could drive random bits of matter into the stable, orderly structures of life.

Suchitra Sebastian: An Explorer of Quantum Borderlands

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Suchitra Sebastian talks about how extreme conditions can create unexpected quantum behavior.

Ken Ono: A Life Inspired by an Unexpected Genius

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Ken Ono explains how Ramanujan has served as his “guardian angel” throughout his life and career.