Explainers

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Space-Time: The Biggest Problem in Physics

What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it’s made of, why it’s failing us, and where physics can go next.


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Liz MacDonald on the strangest auroras in the world.

July 9, 2020

Liz MacDonald discusses what more people should know about the auroras.

James Maynard Solves the Hardest Easy Math Problems

June 30, 2020

James Maynard talks about why he’s obsessed with prime numbers.

Katie Mack Knows How It’s All Going to End

June 22, 2020

Katie Mack describes the most likely scenario for the end of the universe.

Epidemiologist Tara Smith Answers Coronavirus Questions

June 18, 2020

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

March 25, 2020

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

March 11, 2020

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

March 3, 2020

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

February 3, 2020

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

January 21, 2020

Scarlett Howard describes how and why she taught honeybees math.