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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Greg Johnson on A.I. That Sees Inside Cells

July 24, 2019

Greg Johnson, a computer vision researcher at the Allen Institute for Cell Science, explains how his deep learning vision systems can advance the state of cell biology.

Hod Lipson Builds Consciousness Into a Robot

July 11, 2019

The roboticist Hod Lipson, the director of the Creative Machines Lab at Columbia University, uses robots to explore ancient questions about how people think.

Lee Smolin on the Impossibility of Studying the Universe

June 27, 2019

Lee Smolin explores the problem of understanding the universe from the perspective of being inside the universe, as well as the need for physicists to know philosophy.

Amie Wilkinson on the Mathematics of Change

June 13, 2019

The mathematician Amie Wilkinson explains how dynamics lets mathematicians explore the fundamentals of change.

Edward O. Wilson on the Evolution of Social Behaviors

May 15, 2019

Edward O. Wilson, professor emeritus at Harvard University, is the influential naturalist and evolutionary theorist who introduced the concept of “sociobiology,” as well as one of the world’s leading experts on ants. Here, he explains the relevance of evolved insect behaviors to human nature.

What Are Feynman Diagrams?

May 13, 2019

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

Jim Gunn on Building Astronomical Instruments

April 18, 2019

The lauded astronomer Jim Gunn explains how a new spectrograph he is building will advance astronomy.

Ecologist Jennifer Dunne on Humans’ Place in Food Webs

March 21, 2019

Jennifer Dunne of the Santa Fe Institute explains how reconstructions of food webs in past ecosystems help ecologists understand both the unusual niche of humans and new clues to a more sustainable civilization.

CRISPR Pioneer Jennifer Doudna on Its Research Promise

February 27, 2019

Jennifer Doudna, one of the coinventors of CRISPR technology, discusses how her work on bacterial defenses against viruses helped lead to a discovery with a revolutionary impact on biological research.