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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
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<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20120107004049" timestamp="2012-01-07T00:40:49Z" ns="0" title="GEOS-Chem Adjoint v31" />
        <page value="20130703230625" timestamp="2013-07-03T23:06:25Z" ns="0" title="GEOS-Chem Adjoint v33" />
        <page value="20130703230740" timestamp="2013-07-03T23:07:40Z" ns="0" title="GEOS-Chem Adjoint v32" />
        <page value="20130724212733" timestamp="2013-07-24T21:27:33Z" ns="0" title="GEOS-Chem Adjoint v34" />
        <page value="20131128021922" timestamp="2013-11-28T02:19:22Z" ns="0" title="Methyl chloroform lifetime" />
        <page value="20160209194420" timestamp="2016-02-09T19:44:20Z" ns="0" title="Methyl peroxy nitrate chemistry" />
        <page value="20160309182138" timestamp="2016-03-09T18:21:38Z" ns="0" title="Updating standard chemistry with JPL 10-6" />
        <page value="20160428151417" timestamp="2016-04-28T15:14:17Z" ns="0" title="MIX Asian anthropogenic emissions" />
        <page value="20161102140022" timestamp="2016-11-02T14:00:22Z" ns="0" title="EDGAR anthropogenic emissions" />
        <page value="20161206173528" timestamp="2016-12-06T17:35:28Z" ns="0" title="Air Quantity Updates for v11-01" />
      </results>
    </querypage>
  </query>
</api>