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Machines Beat Humans on a Reading Test. But Do They Understand?

October 17, 2019

A tool known as BERT can now beat humans on advanced reading-comprehension tests. But it's also revealed how far AI has to go.

Inherited Learning? It Happens, but How Is Uncertain

October 16, 2019

Studies suggest that epigenetics allows some learned adaptive responses to be passed down to new generations. The question is how.

With Category Theory, Mathematics Escapes From Equality

October 10, 2019

Two monumental works have led many mathematicians to avoid the equal sign. The process has not always gone smoothly.

Soil’s Microbial Market Shows the Ruthless Side of Forests

August 27, 2019

In the “underground economy” for soil nutrients, fungi strike hard bargains and punish plants that won’t meet their price.

Cosmologists Debate How Fast the Universe Is Expanding

August 8, 2019

New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.

Quantum Darwinism, an Idea to Explain Objective Reality, Passes First Tests

July 22, 2019

Three experiments have vetted quantum Darwinism, a theory that explains how quantum possibilities can give rise to objective, classical reality.

The Simple Idea Behind Einstein’s Greatest Discoveries

June 26, 2019

Lurking behind Einstein’s theory of gravity and our modern understanding of particle physics is the deceptively simple idea of symmetry. But physicists are beginning to question whether focusing on symmetry is still as productive as it once was.

What’s in a Name? Taxonomy Problems Vex Biologists

June 24, 2019

Researchers struggle to incorporate ongoing evolutionary discoveries into an animal classification scheme older than Darwin.

Physicists Debate Hawking’s Idea That the Universe Had No Beginning

June 6, 2019

A recent challenge to Stephen Hawking’s biggest idea — about how the universe might have come from nothing — has cosmologists choosing sides.