Friday, December 17, 2021

Giant Arc of Galaxies Puts Basic Cosmology Under Scrutiny

Math and Science News from Quanta Magazine
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COSMOLOGY | ALL TOPICS

 

Cosmologists Parry Attacks on the Cosmological Principle

By CHARLIE WOOD

A central pillar of cosmology — the universe is the same everywhere and in all directions — is surviving a storm of possible evidence against it.

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COMBINATORICS

 

Oxford Mathematician Advances Century-Old Combinatorics Problem

By ERICA KLARREICH

A new paper shows how to create longer disordered strings than mathematicians had thought possible, proving that a well-known recent conjecture is "spectacularly wrong."

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QUANTIZED COLUMNS

 

What Does It Mean
for AI to Understand?

By MELANIE MITCHELL

Language models can generate uncannily humanlike prose (and poetry!) and seemingly perform sophisticated linguistic reasoning. How can we test if these machines actually understand what they're doing?

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Q&A

 

When a Gene Illness Discovery Means Breaking Bad News

By RACHEL CROWELL

When scientists discover genes linked to dangerous illnesses in their samples, how should they convey that news to the study participants? The geneticist Cristen Willer had to tackle that challenge.

Read the interview

Related: 
Karen Miga Fills In the Missing
Pieces of Our Genome

by Carrie Arnold

Around the Web

Rebalancing Ocean Carbon
Removing carbon dioxide from our atmosphere is critical to fighting climate change. Equally important is its removal from our oceans, as Scott K. Johnson reports for Ars Technica. One key to removing CO2 from the ocean is fighting ocean acidification. In 2019, Christie Wilcox wrote for Quanta about how dead creatures on the sea floor can help maintain a healthy pH.

Be Chill but Don't Freeze
Researchers managed to keep water in its liquid form down to -47.2 degrees Fahrenheit, Ashley Hamer reports for Live Science. Water's phase diagram is vastly more complicated than textbooks usually describe. Not only can it be a frigid liquid, but it can also be a sweltering solid. In 2019, Joshua Sokol wrote for Quanta about "superionic ice," water ice with a temperature of thousands of degrees.
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