{"id":42312,"date":"2021-07-13T14:36:00","date_gmt":"2021-07-13T18:36:00","guid":{"rendered":"https:\/\/www.shortform.com\/blog\/?p=42312"},"modified":"2021-07-20T09:58:52","modified_gmt":"2021-07-20T13:58:52","slug":"nuclear-winter-theory","status":"publish","type":"post","link":"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/","title":{"rendered":"Nuclear Winter Theory and Merchants of Doubt"},"content":{"rendered":"\n<p>What is the nuclear winter theory? How did doubt-mongering affect public awareness and policy about it?<\/p>\n\n\n\n<p>During the Cold War, the nuclear winter theory inspired scientific research\u2014as well as doubt-mongering. In <em>Merchants of Doubt<\/em>, historians Naomi Oreskes and Erik Conway identify the people and organizations who sought to discredit the science that threatened their agenda or ideology. <\/p>\n\n\n\n<p>Read more to learn how merchants of doubt influenced the debate about the nuclear winter theory.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">The Origins of the Nuclear Winter Theory<\/h2>\n\n\n\n<p>During Reagan\u2019s term, <strong>astrophysicists at NASA Ames Research Center were working with computer models to assess the effects that dust in the atmosphere has on the surface of planets.<\/strong> Initially, they were trying to learn about Mars\u2019s atmosphere, but then they realized the models could help them figure out what had happened to the dinosaurs and what might happen after a nuclear war.<\/p>\n\n\n\n<p>After something massive collides with the Earth, whether an asteroid or a nuclear warhead, fires start and huge amounts of dust fly into the atmosphere. Smoke and dust block the sun. Without the sun, the surface temperature cools and plants, unable to photosynthesize, die.&nbsp;<\/p>\n\n\n\n<p><strong>The models suggested that even a small nuclear exchange would create enough dust to lower the Earth\u2019s surface temperature below freezing even in the summer. <\/strong>The drop would be 35 degrees Celsius. This would come to pass even if the exchange was small (somewhere between 500-2,000 warheads). Each superpower had around 40,000 warheads.<\/p>\n\n\n\n<p>The models relied on data that came from the Nagasaki and Hiroshima bombings, and above-ground testing in the 1950s. This data wouldn\u2019t necessarily represent a modern nuclear exchange because:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Modern weapons didn\u2019t work exactly the same way as the old ones. <\/strong>They might explode differently or create fire differently.<\/li><li><strong>The U.S. and Soviet landscape might burn differently than the Japanese one<\/strong>\u2014forests, grasslands, and cities all burn differently.<\/li><\/ul>\n\n\n\n<p>However, <strong>while there was uncertainty around the details\u2014the \u201csecond-order\u201d effects, it <\/strong><strong><em>was<\/em><\/strong><strong> clear that a nuclear exchange would cause enough damage to seriously endanger everything living on the planet.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Announcing the Nuclear Winter Theory<\/h3>\n\n\n\n<p>The astrophysicists started work on a paper that would be known as TTAPS for the last names of its authors. Notably, the \u201cS\u201d was for Carl Sagan.<\/p>\n\n\n\n<p>In 1982, <strong>organizations worried about the effects of nuclear war approached Carl Sagan and three other scientists about giving a conference.<\/strong> The TTAPS paper hadn\u2019t been published yet, so the scientists agreed to hold a conference only if the paper passed peer review during a workshop, and only after it was reviewed by prominent biologists. (Typically, peer review is done individually, but workshop review didn\u2019t violate any scientific protocols.)&nbsp;<\/p>\n\n\n\n<p>Shortly after the <a href=\"https:\/\/www.shortform.com\/blog\/missile-defense\/\">Strategic Defense<\/a> Initiative (SDI) was announced, the TTAPS did pass peer review and the biologists found it so compelling they wrote their own paper, so the conference was green-lighted.&nbsp;<\/p>\n\n\n\n<p><strong>Three days before the conference, Sagan published an article in <em>Parade<\/em><\/strong>, a Sunday magazine with more than 10 million readers, that summarized the nuclear winter theory and emphasized the worst-case scenario while not discussing the caveats in detail. He also published an article in <em>Foreign Affairs<\/em> around the same time as the conference. <strong>He argued that policy should reduce the number of warheads below the threshold for causing nuclear winter.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Further Exploration of the Science<\/h3>\n\n\n\n<p><strong>The TTAPS paper and biologists\u2019 paper were published in December 1983 in <\/strong><strong><em>Science<\/em><\/strong><strong>,<\/strong> the U.S.\u2019s most esteemed scientific journal. The magazine\u2019s publisher also published an editorial congratulating the scientists for addressing the ways science might be used for violence.<\/p>\n\n\n\n<p>Other scientists quickly tackled some of the uncertainties. Climate modeler Curt Covey and two colleagues at the National Center for Atmospheric Research remodeled the entire hypothesis in 1984. Their model included the large-scale movement of air (atmospheric circulation) and <strong>their analysis found that, yes, the aftereffects of a nuclear exchange would cause the planet&#8217;s surface temperature to drop, though not by as much as 35 degrees Celsius<\/strong>. Their calculation suggested the drop would be only between 10-20 degrees, more of a nuclear autumn than winter. However, this was still enough of a change to cause serious problems such as crop failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The MOD&#8217;s Response<\/h3>\n\n\n\n<p>Merchants of doubt Fred Seitz, Robert Jastrow, and Edward Teller were unhappy with the direction the studies were headed in. They didn\u2019t like Carl Sagan or some of the other scientists involved with the studies.<\/p>\n\n\n\n<p><strong>In 1984, Jastrow created the <a href=\"https:\/\/www.shortform.com\/blog\/george-catlett-marshall\/\">George C. Marshall<\/a> Institute with Frederick Seitz and William Nierenberg.<\/strong> The Marshall Institute\u2019s goal was to improve the public\u2019s <a href=\"https:\/\/www.shortform.com\/blog\/science-literacy\/\">scientific literacy<\/a> when it came to national security and other public concerns, which it would do by distributing materials, holding training seminars for journalists and congressional employees, and writing opinion pieces and articles. <strong>Jastrow thought people opposed SDI because they didn\u2019t understand it.<\/strong>&nbsp;<\/p>\n\n\n\n<p>1986 was a big year for the MODs:<\/p>\n\n\n\n<p>1. The Union of Concerned Scientists (UCS), who opposed weapons research, put together a TV program about SDI that the Marshall Institute considered one-sided. <strong>The Institute wrote to all the networks that were planning to air it that the Fairness Doctrine would oblige them to show the Institute\u2019s viewpoint as well.<\/strong> As a result, few networks ran the UCS program so that they wouldn\u2019t be obliged to run anything by Jastrow.<\/p>\n\n\n\n<p>2. In a 1986 letter to <em>Nature,<\/em><strong><em> <\/em>Kerry Emanuel, a hurricane scientist, claimed that everyone involved in the nuclear winter theory lacked \u201cscientific integrity.\u201d<\/strong> He wrote that:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>There was too much uncertainty around the subject. <\/strong>(As we learned, certainty was impossible when it came to nuclear winter because the only way to find out for sure what would happen was to start and observe a nuclear war.)<\/li><li><strong>The modeling was approximate and failed to consider hurricanes.<\/strong> (The scientists <em>had <\/em>acknowledged that this was a major uncertainty. Additionally, even today, models can\u2019t capture hurricanes because they\u2019re too small.)<\/li><li><strong>Sagan had undermined standard scientific practice by announcing the nuclear winter theory early.<\/strong> Additionally, in <em>Parade<\/em>, he\u2019d played up the worst-case scenarios and had failed to mention some of the uncertainties. (This was true, and Emanuel wasn\u2019t the only scientist to take issue with it.)<\/li><\/ul>\n\n\n\n<p>3. Jastrow wrote a fund-raising letter concluding that <strong>the change in temperature predictions\u2014from winter to autumn\u2014showed that the TTAPS scientists had been blowing everything out of proportion.<\/strong> He accused them of doing bad science by ignoring mitigating factors.<\/p>\n\n\n\n<p>4. Jastrow hired Russell Seitz to keep pushing <a href=\"https:\/\/www.shortform.com\/blog\/ranga-dias-fraud\/\">scientific fraud<\/a> and he wrote an article in <em>National Interest<\/em>. The article was about how scientists shouldn\u2019t be trusted <em>at all<\/em> and Seitz wrote that:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>All the organizations that were involved in nuclear winter research were biased\u2014<\/strong>they were all liberal or environmentalists.<\/li><li><strong>The TTAPs model was unscientific.<\/strong> It was oversimplified and ignored important factors. (All models <em>are<\/em> simplified, but the one the TTAPS scientists used was the best available.)<\/li><li><strong>The TTAPS scientists had ulterior motives\u2014they were influenced by the nuclear freeze movement.<\/strong> (Anyone doing <em>any <\/em>kind of science at the time was influenced by the context. Peer review is designed to catch bias.)<\/li><li><strong>Nuclear winter wasn\u2019t as serious as they\u2019d made it out to be. <\/strong>Seitz quoted famous physicists who disagreed with the TTAPS conclusions and accused the <em>Parade<\/em> of using deliberately sensational illustrations (black cloud covering the world).<\/li><li><strong>Mainstream science was corrupt and politically motivated. <\/strong>Seitz quoted <em>Betrayers of the Truth<\/em>, a book about bias in the history of science. (The book doesn\u2019t actually attack science\u2014it discusses individual cases of fraud and bias but concludes that most scientists aren\u2019t corrupt and do seek the truth.) He also attacked reputable organizations like the National Academy of Sciences (NAS) and reputable publications.<\/li><\/ul>\n\n\n\n<p>Seitz failed to mention a few important caveats:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Political <em>conservatives <\/em>were heavily involved in the SDI and nuclear winter debates.<\/li><li>The supposedly corrupt publications <em>had<\/em> published the work of the SDI supporters. For example, Teller had published <em>Nature<\/em> (the best journal in the world), and he, Singer, and Seitz had all been published in <em>Science<\/em>.&nbsp;<\/li><li>The NAS is a relatively <em>conservative <\/em>organization. It\u2019s funded by <a href=\"https:\/\/www.shortform.com\/blog\/the-executive-branch\/\">the executive branch<\/a> so it avoids controversies. Additionally, Academy reports are usually consensus reports, so to get everyone\u2019s agreement, conclusions are usually innocuous and non-radical.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Further Exploration of the Science<\/h3>\n\n\n\n<p><strong>Covey\u2019s team criticized Emmanuel for attacking their scientific integrity, but Covey agreed that Sagan had been out of line by publishing early.<\/strong> He also thought that the TTAPS team should have done more to emphasize that 35 degrees of cooling was an older, less accurate number once Covey\u2019s work had revealed this.<\/p>\n\n\n\n<p>However, <strong>while the debate about Sagan\u2019s handling of the matter and how it was presented to the public was ongoing, the science was fairly clear. By 1988, there were enough papers published for the nuclear winter theory<\/strong> <strong>to be considered respectable.<\/strong><\/p>\n\n\n\n<p>In 1990, the TTAPS scientists reviewed all the literature and concluded that a nuclear exchange would result in a cooling of the Earth\u2019s temperature. On average, land under the clouds would cool up to 10-20 degrees Celsius, continental interiors could cool 20-40 degrees Celsius, and the temperature could drop below 0 degrees Celsius even in the summer.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the nuclear winter theory? How did doubt-mongering affect public awareness and policy about it? During the Cold War, the nuclear winter theory inspired scientific research\u2014as well as doubt-mongering. In Merchants of Doubt, historians Naomi Oreskes and Erik Conway identify the people and organizations who sought to discredit the science that threatened their agenda or ideology. Read more to learn how merchants of doubt influenced the debate about the nuclear winter theory.<\/p>\n","protected":false},"author":9,"featured_media":42320,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[39,275,160],"tags":[427],"class_list":["post-42312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-history","category-politics","category-science","tag-merchants-of-doubt","","tg-column-two"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.3 (Yoast SEO v24.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nuclear Winter Theory and Merchants of Doubt - Shortform Books<\/title>\n<meta name=\"description\" content=\"Learn how doubt-mongering influenced scientific and political debates about the nuclear winter theory, ultimately impacting public awareness.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nuclear Winter Theory and Merchants of Doubt\" \/>\n<meta property=\"og:description\" content=\"Learn how doubt-mongering influenced scientific and political debates about the nuclear winter theory, ultimately impacting public awareness.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\" \/>\n<meta property=\"og:site_name\" content=\"Shortform Books\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-13T18:36:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-07-20T13:58:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/s3.amazonaws.com\/wordpress.shortform.com\/blog\/wp-content\/uploads\/2021\/07\/nuclear-winter-theory.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"365\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Elizabeth Whitworth\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Elizabeth Whitworth\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\"},\"author\":{\"name\":\"Elizabeth Whitworth\",\"@id\":\"https:\/\/www.shortform.com\/blog\/#\/schema\/person\/d2928cf6c11a69ced1491d6a5b74fb13\"},\"headline\":\"Nuclear Winter Theory and Merchants of Doubt\",\"datePublished\":\"2021-07-13T18:36:00+00:00\",\"dateModified\":\"2021-07-20T13:58:52+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\"},\"wordCount\":1539,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.shortform.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.shortform.com\/blog\/wp-content\/uploads\/2021\/07\/nuclear-winter-theory.jpg\",\"keywords\":[\"Merchants of Doubt\"],\"articleSection\":[\"History\",\"Politics\",\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\",\"url\":\"https:\/\/www.shortform.com\/blog\/nuclear-winter-theory\/\",\"name\":\"Nuclear Winter Theory and Merchants of Doubt - 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