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particle physics

Grand Unification Dream Kept at Bay

Physicists have failed to find disintegrating protons, throwing into limbo the beloved theory that the forces of nature were unified at the beginning of time.

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gravity

The Case Against Dark Matter

A proposed theory of gravity does away with dark matter, even as new astrophysical findings challenge the need for galaxies full of the invisible mystery particles.

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quantum gravity

What Sonic Black Holes Say About Real Ones

Can a fluid analogue of a black hole point physicists toward the theory of quantum gravity, or is it a red herring?

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genomics

Giant Genetic Map Shows Life’s Hidden Links

In a monumental set of experiments, spread out over nearly two decades, biologists removed genes two at a time to uncover the secret workings of the cell.

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Pencils Down: Experiments in Education

The Art of Teaching Math and Science

The impasse in math and science instruction runs deeper than test scores or the latest educational theory. What can we learn from the best teachers on the front lines?

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algorithms

How to Cut Cake Fairly and Finally Eat It Too

Computer scientists have come up with a bounded algorithm that can fairly divide a cake among any number of people.

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astrophysics

Strange Dark Galaxy Puzzles Astrophysicists

The surprising discovery of a massive, Milky Way–size galaxy that is made of 99.99 percent dark matter has astronomers dreaming up new ideas about how galaxies form.

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computer security

Hacker-Proof Code Confirmed

Computer scientists can prove certain programs to be error-free with the same certainty that mathematicians prove theorems.

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astrophysics

Colliding Black Holes Tell New Story of Stars

Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.