Scientific American 201906

June 2019, ScientificAmerican.com 59 SOURCES: “TRAINED IMMUNITY: A PROGRAM OF INNATE IMMUNE MEMORY IN HEALTH AND DISEASE,” BY MI ...

60 Scientific American, June 2019 MELINDA WENNER MOYER nology,” says Helen Goodridge, an immunologist at Cedars-Sinai Medical Ce ...

June 2019, ScientificAmerican.com 61 for researchers to deny children vaccinations to study them. Thus, scientists must get crea ...

KEN SHIELD Missiles designed to destroy incoming nuclear warheads fail frequently in tests and could increase global risk of mas ...

June 2019, ScientificAmerican.com 63 SHIELD © 2019 Scientific American © 2019 Scientific American ...

64 Scientific American, June 2019 The president was expressing extraordinary faith in the Ground-based Midcourse Defense (GMD) s ...

June 2019, ScientificAmerican.com 65 PENELOPE BREESE Getty Images MARCH 23, 1983 President Ronald Reagan announces the nation wi ...

66 Scientific American, June 2019 DAVID AKE Getty Images ( George H. W. Bush and Boris Yeltsin ); KONSTANTIN ZAVRAZHIN Getty Ima ...

June 2019, ScientificAmerican.com 67 rines at sea. And this logic certainly does not apply to an adver- sary whose intent is not ...

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Photograph by Dan Saelinger June 2019, ScientificAmerican.com 69 How DNA is used to store— and generate—information at extreme s ...

70 Scientific American, June 2019 illions of years before humans developed hard drives, evolution chose DNA to store its most pr ...

June 2019, ScientificAmerican.com 71 SOURCE: “A DIRECT COMPARISON OF IN VITRO AND IN VIVO NUCLEIC ACID DELIVERY MEDIATED BY HUND ...

72 Scientific American, June 2019 GETTY IMAGES ample is cancer biology, which looks at how genetic mutations cause cancer and ho ...

June 2019, ScientificAmerican.com 73 corded a GIF from a part of the first motion picture, which was created by Eadweard Muybrid ...

74 Scientific American, June 2019 RECOMMENDED By Andrea Gawrylewski ULET IFANSASTI Getty Images Underland: A Deep Time Journey b ...

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76 Scientific American, June 2019 Zeynep Tufekci is an associate professor at the University of North Carolina School of Informa ...

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78 Scientific American, June 2019 Illustration by Matt Collins ANTI GRAVITY THE ONGOING SEARCH FOR FUNDAMENTAL FARCES Steve Mirs ...