In Theory
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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Liz MacDonald on the strangest auroras in the world.
Liz MacDonald discusses what more people should know about the auroras.
James Maynard Solves the Hardest Easy Math Problems
James Maynard talks about why he’s obsessed with prime numbers.
Katie Mack Knows How It’s All Going to End
Katie Mack describes the most likely scenario for the end of the universe.
Epidemiologist Tara Smith Answers Coronavirus Questions
Highlights from Tara C. Smith’s live YouTube event on May 1, 2020, in which she answered reader questions about the COVID-19 pandemic.
Pincelli Hull Explains What Killed Off the Dinosaurs
Evidence from the oceans decisively shows that an asteroid strike caused the last mass extinction, argues Pincelli Hull. The cataclysm continues to hold lessons for today.
Ronald Rivest on Building Better Elections
Ronald Rivest of the Massachusetts Institute of Technology describes the role of computers in voting and what makes elections trustworthy.
Omololu Akin-Ojo: Doing Cutting-Edge Physics in Africa
Omololu Akin-Ojo of the East African Institute for Fundamental Research discusses his plans to invigorate theoretical physics in Africa, including by focusing on problems related to energy and water that will especially impact the continent.
Nobel Laureate James P. Allison on the Origins of His Cancer Immunotherapy Research
James P. Allison of the University of Texas MD Anderson Cancer Center discusses what initially drew him to immunology as a field and why many scientists used to be skeptical that an immunological strategy for killing cancers would work.
Scarlett Howard on the Lessons of Teaching Bees Math
Scarlett Howard describes how and why she taught honeybees math.