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Physicists Mourn Joe Polchinski, Developer of Deep Ideas and Paradoxes

February 20, 2018

The theoretical physicist Joe Polchinski, who died Feb. 2, left a tremendous professional and personal legacy, says a friend and collaborator.

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How Math (and Vaccines) Keep You Safe From the Flu

February 5, 2018

Simple math shows how widespread vaccination can disrupt the exponential spread of disease and prevent epidemics.

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Why an Old Theory of Everything Is Gaining New Life

January 8, 2018

For decades, physicists have struggled to create a quantum theory of gravity. Now an approach that dates to the 1970s is attracting newfound attention.

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The (Math) Problem With Pentagons

December 11, 2017

Triangles fit effortlessly together, as do squares. When it comes to pentagons, what gives?

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What Bacteria Can Tell Us About Human Evolution

December 5, 2017

To discover our species’ deep history and to shape its future health, we should learn from the microbes that accompanied us on our evolutionary journey.

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The Unforgiving Math That Stops Epidemics

October 26, 2017

If you didn’t get a flu shot, you are endangering more than just your own health. Calculations of herd immunity against common diseases don’t make exceptions.

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The Math Behind Gerrymandering and Wasted Votes

October 12, 2017

Simple math can help scheming politicians manipulate district maps and cruise to victory. But it can also help identify and fix the problem.

Neuron drawings by Santiago Ramón y Cajal
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Why the First Drawings of Neurons Were Defaced

September 28, 2017

Every exquisite drawing by Santiago Ramón y Cajal, the founder of modern neuroscience, is marred by a curious mark. Here is the little-known story behind it.

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To Solve the Biggest Mystery in Physics, Join Two Kinds of Law

September 7, 2017

Reductionism breaks the world into elementary building blocks. Emergence finds the simple laws that arise out of complexity. These two complementary ways of viewing the universe come together in modern theories of quantum gravity.