Discover – September 2019

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Discover SCIENCE FOR THE CURIOUS ® INSIDE THE PUBLIC HEALTH CRISIS OF GUN VIOLENCE FINALLY, A WEATHER REPORT YOU CAN BELIEVE P. ...

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SEPTEMBER/OCTOBER 2019 . DISCOVER 3 SEPTEMBER/OCTOBER 2019 VOL. 40, NO. 7 30 The Science of Gun Violence Researchers believe pub ...

CONTENTS ON THE COVER How to Beat Back Your Phobias p. What’s Inside Black Holes? p. Inside the Public Health Crisis of Gun Viol ...

BOULDER, Colorado The U.S. government has engineered the most ingenious, most accurate clock in the world: the F-1 U.S. Atomic C ...

SCIENCE FOR THE CURIOUS Discover D 6 DISCOVERMAGAZINE.COM W I L L I A M Z U B A C K / D I S C O V E R Look to the Evidence Numbe ...

CORRECTIONS We had some errors in our July/August issue: A production file error resulted in several mistakes in the periodic ta ...

On ly $ 2. 0 0 Based on an 1818 painting that depicts John Adams, Thomas Jefferson and Ben Franklin presenting a draft of the De ...

SEPTEMBER/OCTOBER 2019 . DISCOVER 9 BIRDS OF A FEATHER Despite a spirograph-like appearance, these loops and twists actually rep ...

10 DISCOVERMAGAZINE.COM THE CRUX ...

SEPTEMBER/OCTOBER 2019 . DISCOVER 11 IN THE LATE 1940S, while a new library was being built at the future National University of ...

12 DISCOVERMAGAZINE.COM P L A N E T N I N E : C A L T E C H / R . H U R T ( I P A C ) . P O R T R A I T S : S C O T T S H E P P ...

Digital sound processing chip provides clear sound and makes speech easier to understand with less feedback than old analog tech ...

14 DISCOVERMAGAZINE.COM Money Shot A lucky moment leads to an iconic photo of an elusive legend. IT WAS HIGH UP ON THE PLATEAU O ...

Micturate Even if you don’t know what this word means, you’ve definitely done it. Here’s a hint: The term comes from the Latin w ...

16 DISCOVERMAGAZINE.COM FAR, FAR AWAY THE CRUX HIGH CLOUDS ON JUPITER Looking a bit like earthly thunderheads, a white band of h ...

We’ve all had nights when we just can’t lie down in bed and sleep, whether it’s from heartburn, cardiac problems, hip or back ac ...

ReDISCOVER Next Steps A scientist’s prediction of a paralysis cure delivers mixed results. IN 2009, DISCOVER reported that Unive ...

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