<?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;317)]]></title><type><![CDATA[link]]></type><html><![CDATA[In "week317" of This Week's Finds, take a tour of the Earth's climate starting at the extinction of the dinosaurs 65 million year ago. Learn how hot it was shortly after this time, and see some of the strange animals that roamed the planet then. Puzzle over why it started cooling after that. And learn when grasslands started to form, and when people first started using calendars. ]]></html><thumbnail_url><![CDATA[https://i1.wp.com/math.ucr.edu/home/baez/temperature/65Myr.png?fit=440%2C330]]></thumbnail_url><thumbnail_height><![CDATA[]]></thumbnail_height><thumbnail_width><![CDATA[]]></thumbnail_width></oembed>