The Best American Science And Nature Writing 2017
By Hope Jahren
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About this ebook
“Science is both essential and frivolous, jubilant and despairing, lovely and brutal, perfect and broken—all at the same time—just like the scientists who fashion it,” writes Hope Jahren in her introduction to The Best American Science and Nature Writing 2017. The pieces honored in this collection celebrate astonishing wonders—from our public lands to a new way of tasting food we eat—and investigate grave perils, like the rapid progression of climate change, air pollution, and more. They show us the beauty and innovation of our planet, and how urgently we must fight to protect it from all those who take it for granted.
The Best American Science and Nature Writing 2017 includes:
- Elizabeth Kolbert
- David Epstein
- Maria Konnikova
- Jon Mooallem
- Tom Kizzia
- Nicola Twilley
- And others
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The Best American Science And Nature Writing 2017 - Hope Jahren
Contents
Title Page
Contents
Copyright
Foreword
Introduction
Emergent Fields
SARAH EVERTS: The Art of Saving Relics
MARIA KONNIKOVA: Altered Tastes
KIM TINGLEY: The Secrets of the Wave Pilots
NICOLA TWILLEY: The Billion-Year Wave
Changing Land and Resources
BECCA CUDMORE: The Case for Leaving City Rats Alone
ROBERT DRAPER: The Battle for Virunga
TOM KIZZIA: The New Harpoon
ELIZABETH KOLBERT: A Song of Ice
ADRIAN GLICK KUDLER: Something Uneasy in the Los Angeles Air
OMAR MOUALLEM: Dark Science
MICHELLE NIJHUIS: The Parks of Tomorrow
TOM PHILPOTT: How Factory Farms Play Chicken with Antibiotics
NATHANIEL RICH: The Invisible Catastrophe
CHRISTOPHER SOLOMON: The Devil Is in the Details
The Real Life
of Scientists
SALLY DAVIES: The Physics Pioneer Who Walked Away from It All
DAVID EPSTEIN: The DIY Scientist, the Olympian, and the Mutated Gene
ANN FINKBEINER: Inside the Breakthrough Starshot Mission to Alpha Centauri
AZEEN GHORAYSHI: He Fell in Love with His Grad Student—Then Fired Her for It
CHRIS JONES: The Woman Who Might Find Us Another Earth
KATHRYN JOYCE: Out Here, No One Can Hear You Scream
JON MOOALLEM: The Amateur Cloud Society That (Sort of) Rattled the Scientific Community
MICHAEL REGNIER: The Man Who Gave Himself Away
SONIA SMITH: Unfriendly Climate
EMILY TEMPLE-WOOD: It’s Time These Ancient Women Scientists Get Their Due
Contributors’ Notes
Other Notable Science and Nature Writing of 2016
Read More from The Best American Series®
About the Editors
Connect with HMH
Copyright © 2017 by Houghton Mifflin Harcourt Publishing Company
Introduction copyright © 2017 by Hope Jahren
ALL RIGHTS RESERVED
The Best American Series® is a registered trademark of Houghton Mifflin Harcourt Publishing Company. The Best American Science and Nature Writing™ is a trademark of Houghton Mifflin Harcourt Publishing Company.
No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or by any information storage or retrieval system without the proper written permission of the copyright owner unless such copying is expressly permitted by federal copyright law. With the exception of nonprofit transcription in Braille, Houghton Mifflin Harcourt is not authorized to grant permission for further uses of copyrighted selections reprinted in this book without the permission of their owners. Permission must be obtained from the individual copyright owners as identified herein. Address requests for permission to make copies of Houghton Mifflin Harcourt material to [email protected] or to Permissions, Houghton Mifflin Harcourt Publishing Company, 3 Park Avenue, 19th Floor, New York, New York 10016.
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ISBN 978-1-328-71551-7 (print) ISSN 1530-1508 (print)
ISBN 978-1-328-71556-2 (ebook) ISSN 2573-475X (ebook)
Cover design by Christopher Moisan © Houghton Mifflin Harcourt
Cover photograph © SuperStock
v2.1017
The Case for Leaving City Rats Alone
by Becca Cudmore. First published in Nautilus, July 28, 2016. Copyright © 2016 by NautilusThink Inc. Reprinted by permission of NautilusThink Inc.
The Physics Pioneer Who Walked Away from It All
by Sally Davies. First published in Nautilus, June 28, 2016. Copyright © 2016 by NautilusThink Inc. Reprinted by permission of NautilusThink Inc.
The Battle for Virunga
by Robert Draper. First published in National Geographic, July 2016. Copyright © 2016 by Robert Draper. Reprinted by permission of the author.
The DIY Scientist, the Olympian, and the Mutated Gene
by David Epstein. First published in ProPublica, January 15, 2016. Copyright © 2016 by ProPublica. Reprinted by permission of ProPublica.
The Art of Saving Relics
by Sarah Everts. First published in Scientific American, April 2016. Copyright © 2016 by Sarah Everts. Reprinted by permission of Sarah Everts.
Inside the Breakthrough Starshot Mission to Alpha Centauri
by Ann Finkbeiner. First published in Scientific American, March 2017. Copyright © 2017 by Ann Finkbeiner. Reprinted by permission of the author.
He Fell in Love with His Grad Student—Then Fired Her for It
by Azeen Ghorayshi. First published in BuzzFeed News, January 12, 2016. Copyright © 2016 BuzzFeed News, Inc. Reprinted by permission.
The Woman Who Might Find Us Another Earth
by Chris Jones. First published in The New York Times Magazine, December 7, 2016. Copyright © 2016 by Chris Jones. Reprinted by permission of Chris Jones.
Out Here, No One Can Hear You Scream
by Kathryn Joyce. First published in Huffington Post Highline/The Nation Institute Investigative Fund, March 16, 2016. Copyright © 2016 by Kathryn Joyce. Reprinted by permission of Kathryn Joyce.
The New Harpoon
by Tom Kizzia. First published in The New Yorker, September 12, 2016. Copyright © 2016 by Thomas W. Kizzia. Reprinted by permission of Thomas W. Kizzia.
A Song of Ice
by Elizabeth Kolbert. First published in The New Yorker, October 24, 2016. Copyright © 2016 by Elizabeth Kolbert. Reprinted by permission of Elizabeth Kolbert.
Altered Tastes
by Maria Konnikova. First published in The New Republic, February 15, 2016. Copyright © 2016 by Maria Konnikova. Reprinted by permission of Maria Konnikova and The New Republic.
Something Uneasy in the Los Angeles Air
by Adrian Glick Kudler. First published in Curbed.com, September 22, 2016. Copyright © 2016 by Curbed.com. Reprinted by permission of Vox Media, Inc.
The Amateur Cloud Society That (Sort of) Rattled the Scientific Community
by Jon Mooallem. First published in the New York Times Magazine, May 4, 2016. Copyright © 2016 by Jon Mooallem. Reprinted by permission of Jon Mooallem.
Dark Science
by Omar Mouallem. First published in Hazlitt Magazine, February 17, 2016. Copyright © 2016 by Omar Mouallem. Reprinted by permission of Omar Mouallem.
The Parks of Tomorrow
by Michelle Nijhuis. First published in National Geographic, December 2016. Copyright © 2016 by Michelle Nijhuis. Reprinted by permission of Michelle Nijhuis.
How Factory Farms Play Chicken with Antibiotics
by Tom Philpott. First published in Mother Jones, May/June 2016. Copyright © 2016 by the Foundation for National Progress. Reprinted by permission.
The Man Who Gave Himself Away
by Michael Regnier. First published in Mosaic, September 13, 2016. Copyright © 2016 by Wellcome Trust.
The Invisible Catastrophe
by Nathaniel Rich. First published in The New York Times Magazine, March 31, 2016. Copyright © 2016 by Nathaniel Rich. Reprinted by permission of Nathaniel Rich.
Unfriendly Climate
by Sonia Smith. First published in Texas Monthly, May 2016. Copyright © 2016 by Texas Monthly. Reprinted with permission of Texas Monthly.
The Devil Is in the Details
by Christopher Solomon. First published in Outside Magazine, February 2016. Copyright © 2016 by Outside Magazine. Reprinted by permission of Outside Magazine.
It’s Time These Ancient Women Scientists Get Their Due
by Emily Temple-Wood. First published in Nautilus, April 12, 2016. Copyright © 2016 by NautilusThink Inc. Reprinted by permission of NautilusThink Inc.
The Secrets of the Wave Pilots
by Kim Tingley. First published in The New York Times Magazine, March 17, 2016. Copyright © 2016 by Kim Tingley. Reprinted by permission of Kim Tingley and The New York Times Magazine.
The Billion-Year Wave
by Nicola Twilley. First published in The New Yorker, February 11, 2016. Copyright © 2016 by Conde Nast. Reprinted by permission of Conde Nast.
Foreword
Modern cosmology was born in Germany a century ago, and within two decades of its birth it almost died there. When Albert Einstein published his general theory of relativity in November 1915, it’s doubtful he could have imagined how profoundly deranged his country would become. On May 10, 1933—the same year Einstein left Germany forever—mobs of young Nazis and their supporters across Germany were feeding bonfires with his papers, along with works by Sigmund Freud, Thomas Mann, Bertolt Brecht, Erich Maria Remarque, and others supposedly contaminated with undeutschen Geist—un-German spirit. More than 25,000 books burned on that day, including those of the 19th-century Jewish poet and playwright Heinrich Heine, who had once written, Where they burn books, they will also ultimately burn people.
Einstein’s own research—which transformed our understanding of the universe—was condemned by vicious ideologues as an example of Jewish physics,
whatever that was supposed to be. Even Werner Heisenberg, one of the founders of quantum theory, could not summon the courage to defend Einstein. He capitulated to Nazi authorities, going so far as to request that his colleagues not mention the great physicist’s name in their lectures or publications. Heisenberg himself practiced that same self-censorship in all his work and talks while the Nazis remained in power.
Not all German scientists followed Heisenberg’s spineless lead. Max von Laue, a Nobel laureate described by one colleague as a sensitive and even a nervous man,
nevertheless openly opposed Nazi policies. He publicly compared the attacks on Einstein to the Inquisition’s censure of Galileo. Some accounts say that von Laue always carried something while out walking so he could avoid the mandatory Heil Hitler
salute. He even helped some colleagues escape from Germany. The Nazis eventually forced von Laue to resign from his university position, in 1943, but he remained in Germany during and after the war, where he helped rebuild a shattered scientific community, a community partly undone by its own leaders.
One measure of the health of any modern society must be the degree to which it supports its scientists. A few days before I started to write this foreword, hundreds of thousands of people in dozens of cities across the country participated in the March for Science. It was an event at once inspiring and worrisome: inspiring because so many took a stand for rationalism—a public rebuke to the nation’s leaders that couldn’t be more different from the German book burnings of the 1930s; worrisome because who would have thought that in the 21st century scientists and citizens would feel the need to gather in support of something so self-evidently valuable as unfettered scientific research?
Yet the march was necessary, urgently so. Scientists at more than a dozen federal agencies have launched rogue Twitter feeds to counter the policies of a frighteningly uninformed president who once tweeted that global warming was created by and for the Chinese.
We live at a pivotal moment in history, and not just for ourselves. We have already pumped enough greenhouse gases into the atmosphere that the planet will continue to heat up for centuries to come. Our inaction has fated future generations to a world with flooded coasts, extreme weather, and other catastrophes that will trigger political, social, and economic instability. Scientists are a cautious lot, but some of them now warn that climate change threatens not just the environment
but civilization itself.
Tragically, we’re now led—if that’s the word—by a government that denies the very existence of the crisis that is upon us. The president has promised to scrap funding for NASA’s vitally important climate-monitoring satellites. Scott Pruitt, the new head of the Environmental Protection Agency, told reporters earlier this year, I do not agree that it’s [carbon dioxide] a primary contributor to the global warming that we see.
Given his position, and his denial of basic scientific facts, Pruitt may well be one of the most dangerous people on the planet. He would do well to heed one of Philip K. Dick’s aphorisms: Reality is that which, when you stop believing in it, doesn’t go away.
Without the active participation of the United States in global climate agreements over the next few years, we risk losing forever any chance of avoiding the most disruptive effects of climate change. Our descendants will not judge us kindly.
Sustained, in-depth reporting on these issues has never been more important. And few journalists have done as much as Elizabeth Kolbert to highlight the enormity of the threat posed by global warming. Her contribution to this collection, A Song of Ice,
recounts her trip to Greenland’s vast ice sheet, which covers about 80 percent of the country, with a height exceeding 10,000 feet in the interior. The ice sheet is so big,
she writes, that it creates its own weather. Its mass is so great that it deforms the earth, pushing the bedrock several thousand feet into the mantle. Its gravitational tug affects the distribution of the oceans.
Among the scientists she met was a group studying a single melt stream in northeastern Greenland. That one melt stream, the scientists told her, will eventually raise sea levels around the world by more than three feet, high enough so that harbor waves would lap at the base of Manhattan’s new World Trade Center.
Tom Kizzia takes us on another Arctic journey in his remarkable story, The Last Harpoon,
about Inupiat whale hunters in northern Alaska. Their community of small but comfortable homes, laid out around a new school and a diesel-fired power plant,
depends for its survival on fossil fuels, the very substances that threaten to destroy their ancient hunting traditions.
In The Invisible Catastrophe,
Nathaniel Rich writes about a methane leak at a natural gas facility in Southern California. Methane, Rich tells us, is a potent greenhouse gas, with a warming effect more than 80 times that of carbon dioxide. By the time state officials announced that the leak had finally been capped early in 2016, it had already released enough methane to equal the global-warming impact of the exhaust belched by nearly 2 million cars over the course of a year.
The articles mentioned above remind us—as do all the stories in this collection—of something easily overlooked: science is an intensely personal pursuit. All the data and discoveries, all the remarkable insights about the world and our place in it, come from people beset with the same worries, ambitions, and career obstacles familiar to each of us. And scientists are not immune to the ills that plague any other profession. Hope Jahren, our guest editor, has included two unsettling stories that focus on an issue that has long been underreported: sexual harassment in science. As Azeen Ghorayshi and Kathryn Joyce show in their forceful articles, scientists sometimes need protection not just from malevolent government officials but from their own predatory colleagues and mentors.
Hope has organized her selections in this anthology under three broad themes: Emergent Fields; Changing Land and Resources; and The Real Life
of Scientists. You’ll find in the pages ahead accounts of an astronomer’s search for worlds like our own, the ongoing struggle to save endangered species, the tragic story of a scientist obsessed with altruism, and more than a dozen other examples of some of the best and most important writing of our time.
As we finish work on this year’s anthology, I can’t help wondering what this year will bring. Will the United States, against all expectations, take the lead in confronting climate change? Maybe next year’s collection will include stories that will surprise us all—in a good way. To that end, I’m already gathering candidates for the 2018 edition. And you, readers, can help! I promise to read widely, but I depend on many thoughtful readers, writers, and editors from around the world. Nearly every week my physical mailbox or my email inbox contains some new surprise, a story I would never have found on my own. So please, nominate your favorites for next year’s anthology at http://timfolger.net/forums. I encourage writers to submit their own stories. The criteria for submissions and deadlines, and the address to which entries should be sent, can be found in the news and announcements
forum on my website. Once again this year I’m offering an incentive to enlist readers to scour the nation in search of good science and nature writing: Send me an article that I haven’t found, and if the article makes it into the anthology, I’ll mail you a free copy of next year’s edition. Maybe next year’s guest editor will sign it for you. I also encourage readers to use the forums to leave feedback about the new collection and to discuss all things scientific. The best way for publications to guarantee that their articles are considered for inclusion in the anthology is to place me on their subscription list, using the address posted in the news and announcements forum.
It has been a privilege to work with Hope Jahren. Her first book, Lab Girl, published in 2016, won a tremendous number of accolades, including the National Book Critics Circle Award for best autobiography. The New York Times said that Lab Girl does for botany what Oliver Sacks’s essays did for neurology, what Stephen Jay Gould’s writings did for paleontology.
Not bad for a first effort! As in years past, I’m very grateful to Naomi Gibbs and her colleagues at Houghton Mifflin Harcourt, who are responsible for the entire series of Best American anthologies. And firstly and lastly, I’m grateful to my beauteous wife, Anne Nolan.
But enough from me. Please turn the page, where Hope will tell you more about why she selected these fascinating stories, which deserve the widest possible audience.
TIM FOLGER
Introduction
In 1982 you could pull off of North Carolina State Highway 751, walk into a gas station, buy a pack of cigarettes and enough gas to get you to Tennessee, pay with a five-dollar bill, and still get change back. Once you got back on the road, you’d find yourself driving through what looked like the apocalypse, for 1982 was also the year that a group of men systematically severed at the base every one of the 60-foot-tall loblolly pine (Pinus taeda) trees planted in the area, leaving no fewer than 80 acres of pure demolition behind them. Cleanup crews mowed through the debris using huge drum choppers and then burned what was left. Each of the trees that was killed was, roughly figured, 30 to 40 years older than the man who cut it down. These fallen trees had been planted by other men in 1922, to start a forest and effectively end 60 years of cotton and tobacco sharecropping at the location. Exactly 60 years later, their little forest met its end.
But sometimes the difference between an ending and a beginning is blurry. In 1983 researchers at Duke University started yet another forest at the site by planting hundreds upon hundreds of loblolly pine seedlings within the very ashes of their predecessors. The immediate goal was homogeneity: each of the seedlings was exactly three years old, and they all were closely related genetically—the equivalent of half-siblings in human terms. The seedlings were spaced exactly two and a half meters apart. Ten years later, in 1994, some of the same researchers, plus a new generation of students, began building the most grand-scale and magnificent forest experiment that had ever been attempted. They built huge ringed scaffolds 100 feet across, taller than the forest could ever grow, and they pumped carbon dioxide from massive tankers up through the pipes that lined the scaffolds, bleeding an extra dose of carbon into the air that the little trees used for growth.
The trees loved it: carbon dioxide fueled growth, and more and more carbon meant more and more growth. The deciduous understory decorated itself gaudily with lots of cheaply made leaves, while poison ivy vented its spleen by becoming even more poisonous. Across all this diversity, however, a general trend emerged: on average, most plants grew about 30 to 40 percent bigger at the higher levels of carbon dioxide than they did when grown at the normal ambient levels. It was perhaps the most important plant experiment of the 20th century, and it has since inspired thousands of spinoff experiments, such as the ones that I do in my lab, pushing to higher and higher levels of carbon dioxide, trying to find the point when more than enough becomes who cares how much.
Duke University’s Free Air CO2 Enrichment (FACE) experiment ran for 15 years and then, rather suddenly, it was ended, as were several other open-air CO2 experiments: the aspen forest in Wisconsin, the sweetgum plantation in Tennessee, the desert scrub in Nevada—all shut down within a couple of years. The reason that agencies cited was that the experiments were too expensive: it cost taxpayers more than $2 million each year to keep carbon dioxide moving through the scaffolding of Duke’s FACE forest. But there was another, more practical reason to end the experiment that was rarely mentioned: the trees had simply outgrown their scaffolding. They had thrived so much better and faster than anyone expected that they naturally had grown across the boundaries of the test plots and out into the real world. Fortified by health and maturity and untroubled by the constraints of the past, they confidently reached out into something new.
I am sometimes charged with allegorizing human endeavors by way of plant biology, so often lately that I’ve decided to start actually doing it. Right here, right now, I’ll suggest that the Internet is like carbon dioxide for science writers, who are themselves like plants, and that we are living in an unprecedented era of diverse and thriving journalism in the service of science—albeit one that could be cut off and mowed down if we don’t actively value and defend it. My goal with this volume of The Best American Science and Nature Writing was to bring forward the new and unusual topics and voices of 2016, and in so doing I have focused on three main themes: Emergent Fields, Changing Land and Resources, and The Real Life
of Scientists.
The most precious currency of science is new ideas, and so I wanted to highlight especially the journalists who brought out the newest of the new. Entire scientific fields emerged during 2016, seemingly out of the ether, and they were as disparate as they were fascinating: Maria Konnikova wrote about neurogastronomy, a biosensual new approach to making food taste good, while Nicola Twilley described how the discovery of gravitational waves has revised our understanding of spacetime forever; these two stories perhaps form the perfect contrast between the tangible and intangible delights to be had from science. There is also the new science that we’ve only recently realized we need, such as Sarah Everts’s story on the new chemistry of artifact preservation, and then there’s the science that we didn’t even know existed, until Kim Tingley told us the story of how Micronesian explorers have navigated the Pacific Ocean for generations, without instruments, relying upon their unmatched understanding of ocean waves.
Two thousand sixteen was also a year of record highs: it was the warmest year ever recorded, both on land and within the oceans, its average temperature approaching one entire degree Celsius above the 20th-century average. Not unrelatedly, the carbon dioxide concentration within the atmosphere hit a new high, tipping the 400 parts-per-million mark, possibly for good and all. Only 30.1 percent of Earth’s surface was forested as of 2016, probably the lowest value since trees first evolved hundreds of millions of years ago. Global population is at an all-time high, as are crop and livestock production. The proportion of people who live in urban areas has skyrocketed to an unprecedented percentage, and energy use has followed suit. Science journalists spent much of 2016 reporting on how this is changing our planet.
While Elizabeth Kolbert wrote about ice melting in Greenland, Tom Kizzia was documenting the effects of climate change on Alaska’s Inupiat peoples. Our urban spaces got some of the attention that they deserve: Omar Mouallem wrote a graceful piece on light pollution, Tom Philpott reported on the factory farms that feed our cities, and Becca Cudmore questioned the role of rats within city ecosystems. Of special interest was Los Angeles, the most densely populated urban area in America: Nathaniel Rich divulged the mystery of its methane leaks, while Adrian Glick Kudler explored the significance of the famous Santa Ana winds. As the twin forces of globalization and industrialism proceed full force, our protected spaces are more important than ever, as Michelle Nijhuis illustrated with her piece on national parks. Picking up the theme, Christopher Solomon shared with us the myriad disagreements over protected land use in the American West, and Robert Draper told us the dramatic story of Virunga National Park, located in the Democratic Republic of the Congo.
Because 2016 was also the year that my own book, Lab Girl, was published, I was sensitive to stories that illuminated the life of the individual scientist and showed all the different ways that science can be practiced. Emily Temple-Wood enlightened us about several ancient and overlooked women scientists who should rightly take their place as role models for a new generation of students, while Chris Jones profiled modern-day astrophysicist Sara Seager. Several journalists told us the stories of scientists who did the unexpected, from Sonia Smith’s profile of Katharine Hayhoe and her quest to convince Christian evangelicals of the data demonstrating climate change, to Sally Davies on former physicist Fotini Markopoulou and her decision to leave everyday academia, to Michael Regnier’s report on the interesting story of George Price and his obsession with altruism. Some journalists went a step further and broke down the very idea of what it means to be a scientist, such as David Epstein on the do-it-yourself
science of genetics and family history and Jon Mooallem’s thoughtful piece on the amateur
cloud scientists who changed the field of meteorology. With her tongue placed firmly in her cheek, Ann Finkbeiner told us the real story of how starshot
science gets funded when wealthy investors team up with overconfident experts.
Scientists and readers alike were obliged to continue questioning whether science is a place where women can thrive, after multiple lawsuits, investigations, and resignations associated with sexual harassment surfaced at high-profile institutions, including the University of California at Berkeley, the University of Chicago, the American Museum of Natural History, and the University of Washington at Seattle. In recognition of her fearless reporting in this area, I’ve made special inclusion of the article by Azeen Ghorayshi describing the incidents at CalTech that led to the unfair firing of a graduate student, as well as Kathryn Joyce’s piece exposing the infuriating reality that women are not safe while working within U.S. national parks and forests.
No one can argue that 2016 wasn’t a busy year: the scientists of the United States produced more than 400,000 (abstruse) journal articles, and the overworked science journalists of this our Internet Age diligently searched out, or perhaps accidentally stumbled upon, the most arresting, intriguing, moving, beguiling of the bunch and then spun them up into stories for websites, magazines, and newspapers. Here I offer what I believe were the best of the best, the pieces that illuminated science as both glorious and tragic and shined a light on a great discipline that fosters both the best and the worst of what our institutions can be. The year 2016 proved to us once again that science is both essential and frivolous, jubilant and despairing, lovely and brutal, perfect and broken—all at the same time—just like the scientists who fashion it.
Hope Jahren
Part I
Emergent Fields
SARAH EVERTS
The Art of Saving Relics
FROM Scientific American
These suits were built to last. They were pristine white and composed of 20-plus layers of cutting-edge materials handcrafted into a 180-pound frame of armor. They protected the wearers from temperatures that fluctuated between –300 and 300 degrees Fahrenheit and from low atmospheric pressure that could boil away someone’s blood. On a July day in 1969, the world watched intently as astronaut Neil Armstrong, wearing one of these garments, stepped off a ladder and onto a dusty, alien terrain, forever changing the landscape both of the moon and of human history. Few symbols of vision and achievement are more powerful than the Apollo mission spacesuits.
Back on Earth, the iconic garments found new lives as museum pieces, drawing millions to see them at the National Air and Space Museum in Washington, D.C. And staff members there have found, to their surprise, that the suits need their own life support. They are falling apart.
Last year Lisa Young, a conservator at the museum, noticed that a white, foggy bloom was beginning to creep across the transparent fishbowl helmets and that their smooth, curved surface was beginning to crack. It is really frustrating,
Young says. We had thought they were relatively stable.
There had been warning signs of suit trouble, though. The neoprene pressure bladders that kept astronauts’ bodies from exploding in the vacuum of space began crumbling years ago, releasing acidic gases. Anybody who has worked with the spacesuits knows their smell,
Young says. I’d describe it as slightly pungent sweet chlorine.
And an orange-brown sticky stain began appearing on the exterior white fabric.
The trouble is the construction material: plastic. Most people think plastics last forever, which makes them a bane to the environment. But although the repeating units of carbon, oxygen, hydrogen, and other elements in plastics have a long lifetime, the overall chains—synthetic polymers—do not age well. Light conspires with oxygen and temperature to weaken the bonds that hold the units together. Then chemicals added to plastics to make them bendable or colorful migrate outward, making the surface sticky and wet and perfect for attracting dirt. The polycarbonate spacesuit visor, Young thinks, was leaching out a substance added to make it easier to shape.
Priceless 20th-century art is in serious trouble as well. In that era, Andy Warhol, David Hockney, and Mark Rothko all used acrylic paint—a plastic polymer popularized in the 1940s as an alternative to traditional oil paint. Plastic is, in fact, a building block of much of our recent cultural heritage, including important designer furniture, archival film, crash-test dummies, the world’s first Lego pieces, and Bakelite jewelry, as well as the plastic sculptures made by the pop-art movement. We now know that objects made of plastic are some of the most vulnerable in museum and gallery collections,
says Yvonne Shashoua, a conservation scientist at the National Museum of Denmark and one of the first cultural heritage researchers to study plastic degradation.
The conservation field is now racing against time, trying to keep pace with the material’s unexpectedly rapid deterioration. Conservators have identified the most trouble-prone plastics. Scientists are developing new tools to diagnose plastic degradation before it becomes visible to the human eye—for example, by measuring the molecules wafting off artifacts. Researchers are also devising new strategies for freshening up precious plastic art without harming it, using everything from cleaning solutions called microemulsions to polyester microfibers that gently remove dirt.
Degrading Denial
The realization that plastics were a problem dawned slowly. For most of the 20th century the museum world was afflicted with plastics denial syndrome,
Shashoua says. Nobody thought that plastic objects in their collections would degrade.
In fact, some conservators were so enamored with plastic during its heyday of the 1950s, 1960s, and 1970s that they used the polymers in ill-advised ways themselves. For example, conservators laminated Belgium’s oldest parchment, the Codex Eyckensis from the eighth centuryA.D., with PVC plastic for protection. Decades later this laminate had to be painstakingly separated from the parchment because changes in the PVC began exacerbating the ancient document’s demise.
Crash-test dummies first made Shashoua think plastic was not forever. She had grown up visiting London’s Science Museum, where dummies built in the 1970s to better understand the human toll of automobile collisions were on display. The mock bodies—among the first of their kind—have a metal frame skeleton enveloped by medical gelatin that has been sculpted into human form and then covered by a layer of protective PVC. During impact tests, encapsulated red paint would bleed out of the gelatin bodies and get caught underneath the PVC layer wherever the dummy had smashed against a car frame during collision experiments. The red wounds indicated the body’s most vulnerable regions.
As the decades passed, these same crash-test dummies in the museum began bleeding again. Shashoua was shocked to see that the PVC covering these artifacts was collapsing, dripping so much wet, sticky muck that museum staff had set up petri dishes in the showcase to collect the mess. When Shashoua was put in charge of cleaning the artifacts in 2011, she noticed that the dummies’ sculpted contours were losing their definition as the PVC plastic collapsed; in some parts the red paint mixed with the wounded plastic, giving the goo dripping from the dummies an eerily realistic brownish red tinge.
This dripping mess—and in fact all kinds of plastic degradation—owes its start to oxygen. With help from light and heat, the gas rips off the electrons from the long polymer chains that entwine to form a plastic object. Losing electrons can weaken and break chemical bonds in a plastic, undermining its structure. Essentially the long chains break up into smaller constituent molecules called monomers. In the case of the crash-test dummies, this destabilization allowed ingredients called plasticizers, which are added to make the plastic supple, to pour out.
When the museum world began to realize that plastics were not invincible to time, those tasked with protecting plastic art and artifacts had to start from scratch to understand in detail why their collections were breaking down, says Matija Strlič, a conservation scientist at the Institute for Sustainable Heritage at University College London. Although there was extensive literature on polymer production, this research stopped at the end of a plastic object’s expected lifetime—right when conservators get interested, Strlič says. Polymer makers had probably expected that old plastic objects would get tossed away, not delivered to museums.
The Feared Four
Conservators learned that four kinds of plastic polymers are especially prone to problems: PVC, found in everything from spacesuit life-support tubing to crash-test dummies; polyurethane, a primary ingredient in products as diverse as pantyhose and packing sponges, as well as sculptures made from these materials; and finally cellulose nitrate and cellulose acetate, two of the world’s first industrially produced synthetic polymers, found in the film used in early cinema and photography as well as in artificial tortoiseshell items, such as vintage combs and cigarette holders.
Cellulose acetate and cellulose nitrate are not only fragile, they are also often referred to as malignant
by conservators, Shashoua says. That is because they spread destruction to nearby objects. As their polymer networks collapse, they release nitric acid and acetic acid as gases. (Acetic acid is what gives vinegar its characteristic smell and degrading film an odor reminiscent of salad dressing.) The acids eat away at objects made of these plastics. To make matters worse, their gases can also corrode metal and textile things in the same display case or nearby storage. That smell of vinegar is an alarm bell not just that these objects are destroying themselves but that the degrading polymer is taking down innocent bystanders as well.
Shashoua has seen fashion display cases where the acids from a degrading plastic comb have begun eating away textile outfits showcased with the comb or where the plastic in faux tortoiseshell eyeglass frames releases acid that corrodes the spectacles’ metal hinges. Once, in her own workspace, a box containing knives with cellulose nitrate handles began releasing nitric acid that corroded both the metal blades and the hinges of a cupboard near where the utensils were being stored, Shashoua says. To stop these chemical attacks, conservators may put objects made of cellulose acetate in well-ventilated spaces to whisk away the dangerous gases. They also capture the poisonous gases in the tiny pores of filters made from activated carbon and zeolite, in much the same way gas masks protect troops exposed to chemical weapons.
Ventilation and trapping are good strategies against cellulose acetate and cellulose nitrate, but the methods do not work on all plastics, Shashoua says. For example, when PVC breaks down, if its degradation products are pulled away from the surrounding environment, the plastic just releases more. Instead conservators need to keep PVC locked down, sealed in airtight containers, to stall its demise. When conservators noticed that the pristine white Apollo mission spacesuits were getting orangey brown stains on their nylon exterior, they realized the cause was plasticizer leaching out of life-support tubing made of PVC that had been sewn into the textile. The tubing kept astronauts’ bodies from overheating by circulating cooled water around the outfit. We had to carefully remove all the life-support tubing from all the Apollo suits and store it separately in sealed containers,
Young says. That was a lot of work.
These opposing approaches—sealed containers versus ventilated ones—highlight why there is no one-size-fits-all solution. No two objects are alike,
Strlič says. For this reason, conservation scientists try to identify the base polymer in a plastic artwork or artifact, typically with analytical machines such as a Fourier transform infrared spectrometer, which bounces long wavelengths of light off an object to reveal its unique molecular fingerprint. Conservators at the Solomon R. Guggenheim Museum in New York City used such a method to uncover a hidden danger in artwork by Bauhaus pioneer László Moholy-Nagy. They had believed the base material for his painting Tp2 was Bakelite (a phenol-formaldehyde resin), says Carol Stringari, head of conservation at the museum. But recent infrared spectrometer