Friday, June 16, 2023

‘Embryo Models’ Challenge What It Means to Be Human

Math and Science News from Quanta Magazine
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DEVELOPMENTAL BIOLOGY | ALL TOPICS

 

'Embryo Models' Challenge Legal, Ethical and Biological Concepts

By PHILIP BALL

With embryolike constructs built entirely from stem cells, researchers can revolutionize our understanding of development. But how close to an embryo is too close?

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DYNAMICAL SYSTEMS

 

Flow Proof Helps Mathematicians Find Stability in Chaos

By JORDANA CEPELEWICZ

A series of new papers describes how to fully characterize key dynamical systems with relatively little data.

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Related: 
A Mathematician Whose
Only Constant Is Change

By Kevin Hartnett (2019)

ARTIFICIAL INTELLIGENCE

 

Neural Networks Need Data to Learn. Even If It's Fake.

By AMOS ZEEBERG

Real data can be hard to get, so researchers are turning to synthetic data to train their artificial intelligence systems.

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Related: 
Machines Learn Better
if We Teach Them the Basics

By Max G. Levy

NUCLEAR PHYSICS

 

A New Experiment Casts Doubt on the Leading Theory of the Nucleus

By KATIE McCORMICK

By measuring inflated helium nuclei, physicists have challenged our best understanding of the force that binds protons and neutrons.

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Related: 
Inside the Proton, the 'Most Complicated
Thing You Could Possibly Imagine'

By Charlie Wood and Merrill Sherman (2022)

THE JOY OF WHY

 

What Causes Giant Rogue Waves?

Podcast hosted by STEVEN STROGATZ

Once dismissed as myths, monstrous rogue waves that tower over ships and appear without warning are real. Wave-science researcher Ton van den Bremer and Steven Strogatz discuss how rogue waves can form in relatively calm seas and whether their threat can be predicted.

Listen to the podcast

Read the transcript

Around the Web

Constant Distress
Astronomers have spotted a distant supernova that was magnified by gravitational lensing. Gravitationally lensed supernovas could provide a measure of the oft-debated value of the expansion rate of the universe called the Hubble constant. Jennifer Ouellette reports for Ars Technica. Since it was first noticed, the "Hubble tension" — the discrepancy in estimates of the expansion rate given by methods that seem equally valid — has only deepened. In 2020, Natalie Wolchover wrote for Quanta about a precise measurement that amplified the tension.

Cetacean Clues Toward Cancer Aversion
Bowhead whales live for more than 200 years. New research suggests that the key to their longevity might also help them grow big without getting cancers: an exceptional ability to repair damaged DNA. Meghan Rosen reports for Science News. When animals are large, their bodies undergo more cell divisions, which presents more opportunities for cancerous mutations. In 2017, Viviane Callier wrote for Quanta about how elephants protect themselves from cancer as they grow.
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Today in Science: What if we never find dark matter?

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