{"id":4079,"date":"2025-09-10T20:42:01","date_gmt":"2025-09-10T20:42:01","guid":{"rendered":"https:\/\/iscpif.fr\/chavalarias\/?p=4079"},"modified":"2026-02-08T20:22:34","modified_gmt":"2026-02-08T20:22:34","slug":"from-hashtags-to-hostility-global-dynamics-of-climate-denialism-on-twitter-in-the-post-covid-era","status":"publish","type":"post","link":"https:\/\/iscpif.fr\/chavalarias\/?p=4079","title":{"rendered":"From hashtags to hostility: global dynamics of climate denialism on Twitter in the post-COVID era"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_three_fourth  avia-builder-el-first   container_wrap fullsize'  ><div  class='avia-slideshow av-mfefyc0m-3de5ba025b79eee5851614ae26cfb805 avia-slideshow-featured av_slideshow_full avia-slide-slider av-slideshow-ui av-control-default av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied   avia-slideshow-1' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 28.666666666667%;'><li  class='avia-slideshow-slide av-mfefyc0m-3de5ba025b79eee5851614ae26cfb805__0  av-single-slide slide-1 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><div class='av-slideshow-caption av-mfefyc0m-3de5ba025b79eee5851614ae26cfb805__0 caption_fullwidth caption_bottom'><div class=\"container caption_container\"><div class=\"slideshow_caption\"><div class=\"slideshow_inner_caption\"><div class=\"slideshow_align_caption\"><h2 class='avia-caption-title '  itemprop=\"name\" >From hashtags to hostility: global dynamics of climate denialism on Twitter in the post-COVID era<\/h2><div class='avia-caption-content '  itemprop=\"description\" ><p>Chavalarias, David, Paul Bouchaud, Victor Chomel, et Maziyar Panahi. 2025.<br \/>\nComptes Rendus. G\u00e9oscience 357 (G1): 369\u201187.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-3600 avia-img-lazy-loading-not-3600\"  src=\"https:\/\/iscpif.fr\/chavalarias\/wp-content\/uploads\/sites\/4\/2024\/10\/ElpisNetwork_Feb6_2023_graph_2021-01-01_2023-01-27_th1_Core2_NoLabel_3000-1500x430.png\" width=\"1500\" height=\"430\" title='ElpisNetwork_Feb6_2023_graph_2021-01-01_2023-01-27_th=1_Core2_NoLabel_3000' alt=''  itemprop=\"thumbnailUrl\"   \/><\/div><\/li><\/ul><\/div><\/div><div id='after_full_slider_1'  class='main_color av_default_container_wrap container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-4079'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-3v838v-7bc6bd9046435a2cab56f784c7265415 av_three_fourth  avia-builder-el-1  el_after_av_slideshow_full  el_before_av_one_fourth  avia-builder-el-first  first flex_column_div  '     ><section  class='av_textblock_section av-mfefu8a1-ce865d2b885c8238a6f24dda785c7150 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"csl-bib-body\">\n<div class=\"csl-entry\">Chavalarias, David, Paul Bouchaud, Victor Chomel, et Maziyar Panahi. 2025. \u00ab\u00a0From hashtags to hostility: global dynamics of climate denialism on Twitter in the post-COVID era\u00a0\u00bb. <i>Comptes Rendus. G\u00e9oscience<\/i> 357 (G1): 369\u201187. <a href=\"https:\/\/doi.org\/10.5802\/crgeos.304\">https:\/\/doi.org\/10.5802\/crgeos.304<\/a>.<\/div>\n<\/div>\n<blockquote>\n<p>The rise of climate denialism in the general population (5% between 2019 and 2023) has been accompanied by a very significant increase in denialist activism on \u201cX\u201d\/Twitter since the summer of 2022, and increased hostility towards climate scientists.\u00a0Through global tracking of Twitter exchanges about climate change between 2019 and 2023, as well as exchanges about COVID-19 pandemics, we analyzed this online trend and its interaction with other societal issues like politics and COVID-19 pandemics.\u00a0Beyond fact-checking, we show, through complex networks and semantic analyses, that there are structural differences between these denialist and pro-climate online communities, as well as between the circulation of false information and other climate change-related narratives.\u00a0All the evidence suggests that the behavior of deniers is designed to deceive, and that they are over-represented on social networks compared to what they actually represent offline. This is particularly true on \u201cX\u201d\/Twitter since Musk\u2019s takeover.\u00a0We have also highlighted the globalized aspect of this new denialism, its alignment with the interests and visions of powers such as Russia and how it has benefited from the COVID-19 pandemic.<\/p>\n<\/blockquote>\n<\/div><\/section><\/div>\n<div  class='flex_column av-2twurj-341f4b4b08bb2ffc50b055079fa2e692 av_one_fourth  avia-builder-el-3  el_after_av_three_fourth  avia-builder-el-last  flex_column_div  '     ><div  class='avia-icon-list-container av-mfeg3inz-72322cf1ada520108a37ea7bddce23d6  avia-builder-el-4  avia-builder-el-no-sibling '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-big av-mfeg3inz-72322cf1ada520108a37ea7bddce23d6 avia-iconlist-animate'>\n<li><div class='iconlist_icon av-mfefzsn4-7571c2cb5b6f62eb9923b3f49434eba4 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue84d' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: &lt;a href=&#039;https:\/\/comptes-rendus.academie-sciences.fr\/geoscience\/articles\/10.5802\/crgeos.304\/&#039; title=&#039;Open access paper&#039; target=&quot;_blank&quot;  rel=&quot;noopener noreferrer&quot;&gt;Open access paper&lt;\/a&gt;\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" ><a href='https:\/\/comptes-rendus.academie-sciences.fr\/geoscience\/articles\/10.5802\/crgeos.304\/' title='Open access paper' target=\"_blank\"  rel=\"noopener noreferrer\">Open access paper<\/a><\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><a href='The rise of climate denialism in the general population ( 5% between 2019 and 2023) has been accompanied by a very significant increase in denialist activism on \u201cX\u201d\/Twitter since the summer of 2022, and increased hostility towards climate scientists. Through global tracking of Twitter exchanges about climate change between 2019 and 2023, as well as exchanges about COVID-19 pandemics, we analyzed this online trend and its interaction with other societal issues like politics and COVID-19 pandemics. Beyond fact-checking, we show, through complex networks and semantic analyses, that there are structural differences between these denialist and pro-climate online communities, as well as between the circulation of false information and other climate change-related narratives. All the evidence suggests that the behavior of deniers is designed to deceive, and that they are over-represented on social networks compared to what they actually represent offline. This is particularly true on \u201cX\u201d\/Twitter since Musk\u2019s takeover. We have also highlighted the globalized aspect of this new denialism, its alignment with the interests and visions of powers such as Russia and how it has benefited from the COVID-19 pandemic.' title='Supplementary material'  target=\"_blank\"  rel=\"noopener noreferrer\" class='iconlist_icon av-mfeg3h7m-85076640dafc12e33e83efa7cfdcc265 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue8d3' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/a><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: &lt;a href=&#039;The rise of climate denialism in the general population ( 5% between 2019 and 2023) has been accompanied by a very significant increase in denialist activism on \u201cX\u201d\/Twitter since the summer of 2022, and increased hostility towards climate scientists. Through global tracking of Twitter exchanges about climate change between 2019 and 2023, as well as exchanges about COVID-19 pandemics, we analyzed this online trend and its interaction with other societal issues like politics and COVID-19 pandemics. Beyond fact-checking, we show, through complex networks and semantic analyses, that there are structural differences between these denialist and pro-climate online communities, as well as between the circulation of false information and other climate change-related narratives. All the evidence suggests that the behavior of deniers is designed to deceive, and that they are over-represented on social networks compared to what they actually represent offline. This is particularly true on \u201cX\u201d\/Twitter since Musk\u2019s takeover. We have also highlighted the globalized aspect of this new denialism, its alignment with the interests and visions of powers such as Russia and how it has benefited from the COVID-19 pandemic.&#039; title=&#039;Supplementary material&#039; target=&quot;_blank&quot;  rel=&quot;noopener noreferrer&quot;&gt;Supplementary material&lt;\/a&gt;\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" ><a href='The rise of climate denialism in the general population ( 5% between 2019 and 2023) has been accompanied by a very significant increase in denialist activism on \u201cX\u201d\/Twitter since the summer of 2022, and increased hostility towards climate scientists. Through global tracking of Twitter exchanges about climate change between 2019 and 2023, as well as exchanges about COVID-19 pandemics, we analyzed this online trend and its interaction with other societal issues like politics and COVID-19 pandemics. Beyond fact-checking, we show, through complex networks and semantic analyses, that there are structural differences between these denialist and pro-climate online communities, as well as between the circulation of false information and other climate change-related narratives. All the evidence suggests that the behavior of deniers is designed to deceive, and that they are over-represented on social networks compared to what they actually represent offline. This is particularly true on \u201cX\u201d\/Twitter since Musk\u2019s takeover. We have also highlighted the globalized aspect of this new denialism, its alignment with the interests and visions of powers such as Russia and how it has benefited from the COVID-19 pandemic.' title='Supplementary material' target=\"_blank\"  rel=\"noopener noreferrer\">Supplementary material<\/a><\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><p>See also the dataverse : <a href=\"https:\/\/doi.org\/10.7910\/DVN\/QIC8SB\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.7910\/DVN\/QIC8SB<\/a><\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-mhq6u6gn-cdc282ae7d0ce37fea89f30021e97205 avia-font-svg_entypo-fontello avia-svg-icon avia-font-svg_entypo-fontello'><span class='av-icon-char' data-av_svg_icon='book-open' data-av_iconset='svg_entypo-fontello'><svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"29\" height=\"32\" viewBox=\"0 0 29 32\" preserveAspectRatio=\"xMidYMid meet\" aria-labelledby='av-svg-title-1' aria-describedby='av-svg-desc-1' role=\"graphics-symbol\" aria-hidden=\"true\">\n<title id='av-svg-title-1'>Book-open<\/title>\n<desc id='av-svg-desc-1'>Book-open<\/desc>\n<path d=\"M10.88 19.584v2.176l-6.4-2.56v-2.176zM10.88 12.928v2.176l-6.4-2.56v-2.176zM28.096 1.856q0.704 0.384 0.704 1.344v20.48q0 1.088-1.024 1.472l-12.736 5.12q-0.256 0.064-0.32 0.064t-0.16 0.032-0.16 0.032-0.16-0.032-0.16-0.032l-0.32-0.064-12.736-5.12q-1.024-0.384-1.024-1.472v-20.48q0-0.96 0.704-1.344 0.704-0.512 1.472-0.192l12.224 4.928 12.224-4.928q0.768-0.32 1.472 0.192zM12.8 27.072v-17.92l-10.24-4.096v17.92zM26.24 22.976v-17.92l-10.24 4.096v17.92zM24.32 17.024v2.176l-6.4 2.56v-2.176zM24.32 10.368v2.176l-6.4 2.56v-2.176z\"><\/path>\n<\/svg><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: Version Fran\u00e7aise\"><h4 class='av_iconlist_title iconlist_title  '  itemprop=\"headline\" >Version Fran\u00e7aise<\/h4><\/header><div class='iconlist_content '  itemprop=\"text\" ><p>Cet article est un d\u00e9veloppement de l&#8217;\u00e9tude publi\u00e9e en Fran\u00e7ais et Anglais <a href=\"https:\/\/iscpif.fr\/climatoscope\/?p=72\" target=\"_blank\" rel=\"noopener\">sur le site du Climatoscope<\/a><\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":9,"featured_media":4080,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,3],"tags":[],"class_list":["post-4079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publication","category-toread"],"_links":{"self":[{"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/posts\/4079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4079"}],"version-history":[{"count":3,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/posts\/4079\/revisions"}],"predecessor-version":[{"id":4267,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/posts\/4079\/revisions\/4267"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=\/wp\/v2\/media\/4080"}],"wp:attachment":[{"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iscpif.fr\/chavalarias\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}