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April 2020 SCiENTiFiCAMEriCAN.COM NEW VIEW OF THE MILK Y WAY Groundbreaking map of our home galaxy reveals hidden depths THE TRO ...

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April 2020, ScientificAmerican.com 1 April 2020 VOLUME 322, NUMBER 4 00 Photograph by Igor Siwanowicz 50 A S T R O N O M Y 28 Ne ...

2 Scientific American, April 2020 Scientific American (ISSN 0036-8733), Volume 322, Number 4, April 2020, published monthly by S ...

Illustration by Nick Higgins April 2020, ScientificAmerican.com 3 FROM THE EDITOR BOARD OF ADVISERS Leslie C. Aiello President, ...

4 Scientific American, April 2020 LETTERS [email protected] BLACK HOLE BREAKOUT In “Escape from a Black Hole,” Steven  B. Giddin ...

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April 2020, ScientificAmerican.com 5 ESTABLISHED 1845 LETTERS TO THE EDITOR HOW TO CONTACT US Subscriptions For new subscription ...

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8 Scientific American, April 2020 SCIENCE AGENDA OPINION AND ANALYSIS FROM SCIENTIFIC AMERICAN’S BOARD OF EDITORS Experts genera ...

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10 Scientific American, April 2020 FORUM COMMENTARY ON SCIENCE IN THE NEWS FROM THE EXPERTS Illustration by Lily Padula Chethan ...

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ADVANCES 12 Scientific American, April 2020 These wings, made from real pigeon feathers, form the basis for a flexible new flyin ...

DISPATCHES FROM THE FRONTIERS OF SCIENCE, TECHNOLOGY AND MEDICINE JOIN THE CONVERSATION ONLINE Visit Scientific American on Face ...

ADVANCES 14 Scientific American, April 2020 LENTINK LAB Stanford University Illustrations by Thomas Fuchs B I O L O G Y Therapy ...

April 2020, ScientificAmerican.com 15 Husbands, a bioinspired roboticist at the Uni- versity of Sussex, who was not involved in ...

ADVANCES 16 Scientific American, April 2020 ANWAR AMRO Getty Images PALEONTOLOGY Future Fossils Humans’ and domesticated animals ...