{"version":"1.0","provider_name":"MATH&#039;MONDE, le blog d&#039;Herv\u00e9 LEHNING, agr\u00e9g\u00e9 de math\u00e9matiques ","provider_url":"https:\/\/blogs.futura-sciences.com\/lehning","author_name":"MATH&#039;MONDE, le blog d&#039;Herv\u00e9 LEHNING, agr\u00e9g\u00e9 de math\u00e9matiques ","author_url":"https:\/\/blogs.futura-sciences.com\/lehning","title":"L'os d'Ishango, par Herv\u00e9 Lehning","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"vyfNakgKOR\"><a href=\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/02\/22\/los-dishango\/\">L&#8217;os d&#8217;Ishango<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/blogs.futura-sciences.com\/lehning\/2019\/02\/22\/los-dishango\/embed\/#?secret=vyfNakgKOR\" width=\"600\" height=\"338\" title=\"\u00ab\u00a0L&#8217;os d&#8217;Ishango\u00a0\u00bb &#8212; MATH&#039;MONDE, le blog d&#039;Herv\u00e9 LEHNING, agr\u00e9g\u00e9 de math\u00e9matiques \" data-secret=\"vyfNakgKOR\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\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<\/script>\n","thumbnail_url":"https:\/\/blogs.futura-sciences.com\/lehning\/wp-content\/uploads\/sites\/13\/2019\/02\/OsIshango-01.jpg","thumbnail_width":253,"thumbnail_height":380,"description":"Au mus\u00e9e des sciences naturelles de Bruxelles, se trouve un os stri\u00e9 de nombreuses entailles, d\u00e9couvert dans les ann\u00e9es 1950 \u00e0 Ishango au Congo belge (devenu RDC) par Jean de Heinzelin de Braucourt (1920\u00a0\u2013\u00a01998). Cet os dat\u00e9 de 20000 ans avant notre \u00e8re n\u2019est pas le plus ancien artefact de ce type connu, mais le &hellip; Continuer la lecture de  &rarr;"}