Friday, May 20, 2022

Simple Gene Circuits Hint at How Stem Cells Differentiate

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SYNTHETIC BIOLOGY | ALL TOPICS

 

Simple Gene Circuits Hint at How Stem Cells Find New Identities

By VERONIQUE GREENWOOD

Synthetic biology experiments suggest a "MultiFate" model for how genetically identical cells become the many different types found in complex organisms like us.

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Q&A

 

How to Write Software With Mathematical Perfection

By SHEON HAN; Video by EMILY BUDER

Leslie Lamport revolutionized how computers talk to each other. Now he's working on how engineers talk to their machines.

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Watch the video

THE JOY OF WHY

 

Will the James Webb Space Telescope Reveal Another Earth?

Podcast hosted by STEVEN STROGATZ

Marcia Rieke and Nikole Lewis, two of the scientists leading JWST investigations, talk to Steven Strogatz about how it may transform our understanding of the universe.

Listen to the podcast

Read the transcript

QUANTUM PHYSICS

 

Puzzling Quantum Scenario Appears Not to Conserve Energy

By KATIE McCORMICK

By resolving a paradox about light in a box, researchers hope to clarify the concept of energy in quantum theory.

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Related: 
New Quantum Paradox Clarifies Where
Our Views of Reality Go Wrong

by Anil Ananthaswamy (2018)

TOPOLOGY

 

How Complex Is a Knot? Proof Reveals Ranking System That Works.

By LEILA SLOMAN

"Ribbon concordance" will let mathematicians compare knots by linking them across four-dimensional space.

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Related: 
Topology 101: The Hole Truth
by David S. Richeson (2021)

Around the Web

Celebrating an Overlooked Physicist
Chien-Shiung Wu was a brilliant nuclear physicist whose discovery of parity violation by the weak force was unjustly overlooked for a Nobel Prize. Yasmin Tayag profiles her for Popular Science. Madame Wu's experiment showed that all neutrinos are left-handed. This and other quirks of particle physics can be seen in Quanta's map of the Standard Model, created by Natalie Wolchover, Samuel Velasco and Lucy Reading-Ikkanda.


Dark History
An ancient collision might be responsible for the missing dark matter in two galaxies, reports Emily Conover for Science News. When the galaxies collided, the dark matter would have passed through unperturbed, while the regular particles slammed against one another. While the existence of galaxies without dark matter has been a mystery, they have helped physicists rule out certain alternatives to dark matter such as modified Newtonian dynamics. Joshua Sokol explained it for Quanta in 2018.
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Today in Science: Humans think unbelievably slowly

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