{"version":"1.0","provider_name":"News Center","provider_url":"https:\/\/www.rochester.edu\/newscenter","author_name":"Sofia Tokar","author_url":"https:\/\/www.rochester.edu\/newscenter\/author\/stokar\/","title":"Earth's magnetic field\u2014reversing or fluctuating?","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"DMgekg7Rnf\"><a href=\"https:\/\/www.rochester.edu\/newscenter\/earths-magnetic-field-reversing-or-fluctuating-217022\/\">Earth&#8217;s magnetic field\u2014reversing or fluctuating?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.rochester.edu\/newscenter\/earths-magnetic-field-reversing-or-fluctuating-217022\/embed\/#?secret=DMgekg7Rnf\" width=\"600\" height=\"338\" title=\"&#8220;Earth&#8217;s magnetic field\u2014reversing or fluctuating?&#8221; &#8212; News Center\" data-secret=\"DMgekg7Rnf\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.rochester.edu\/newscenter\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.rochester.edu\/newscenter\/wp-content\/uploads\/2017\/02\/flickr_nasa_earths-magnetic-field_1000x600.jpg","thumbnail_width":1000,"thumbnail_height":600,"description":"For the last 160 years, the Earth\u2019s magnetic field has been weakening. In an essay shared on Newsweek, professor John Tarduno explains archaeomagnetism research, in which geophysicists team up with archaeologists to study the effects of these changes."}