<?xml version="1.0" encoding="UTF-8" standalone="yes"?><oembed><version><![CDATA[1.0]]></version><provider_name><![CDATA[Azimuth]]></provider_name><provider_url><![CDATA[https://johncarlosbaez.wordpress.com]]></provider_url><author_name><![CDATA[John Baez]]></author_name><author_url><![CDATA[https://johncarlosbaez.wordpress.com/author/johncarlosbaez/]]></author_url><title><![CDATA[This Week&#8217;s Finds (Week&nbsp;318)]]></title><type><![CDATA[link]]></type><html><![CDATA[An introduction to Milankovitch cycles - periodic changes in the Earth's orbit - and some evidence that they might cause the glacial cycles.]]></html><thumbnail_url><![CDATA[https://i0.wp.com/upload.wikimedia.org/wikipedia/commons/thumb/d/da/Eccentricity_zero.svg/200px-Eccentricity_zero.svg.png?fit=440%2C330]]></thumbnail_url><thumbnail_height><![CDATA[176]]></thumbnail_height><thumbnail_width><![CDATA[200]]></thumbnail_width></oembed>