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People encountered roughly 15% less cross-cutting content in news feeds due to algorithmic ranking and clicked through to 70% less of this cross-cutting content. Within the domain of political news encountered in social media, selective exposure appears to drive attention.<\/jats:p><jats:p><jats:italic>Science<\/jats:italic>, this issue p.<jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6239\" page=\"1130\" related-article-type=\"in-this-issue\" vol=\"348\" xlink:href=\"10.1126\/science.aaa1160\">1130<\/jats:related-article>; see also p.<jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6239\" page=\"1090\" related-article-type=\"in-this-issue\" vol=\"348\" xlink:href=\"10.1126\/science.aab1422\">1090<\/jats:related-article><\/jats:p>","DOI":"10.1126\/science.aaa1160","type":"journal-article","created":{"date-parts":[[2015,5,8]],"date-time":"2015-05-08T03:11:50Z","timestamp":1431054710000},"page":"1130-1132","source":"Crossref","is-referenced-by-count":2130,"title":["Exposure to ideologically diverse news and opinion on Facebook"],"prefix":"10.1126","volume":"348","author":[{"given":"Eytan","family":"Bakshy","sequence":"first","affiliation":[{"name":"Facebook, Menlo Park, CA 94025, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Solomon","family":"Messing","sequence":"additional","affiliation":[{"name":"Facebook, Menlo Park, CA 94025, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lada A.","family":"Adamic","sequence":"additional","affiliation":[{"name":"Facebook, Menlo Park, CA 94025, USA."},{"name":"School of Information, University of Michigan, Ann Arbor, MI, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","unstructured":"K. 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