You are looking at the HTML representation of the XML format.
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.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allredirects garcontinue="Carbon_dioxide_collector|260" />
  </query-continue>
  <query>
    <pages>
      <page pageid="70" ns="0" title="Technology path ยต" />
      <page pageid="383" ns="0" title="Bootstrapping productive nanosystems" />
      <page pageid="417" ns="0" title="Binary diamondoid compounds" />
      <page pageid="502" ns="0" title="Bootstrapping" />
      <page pageid="567" ns="0" title="Binary diamondoid compound" />
      <page pageid="753" ns="0" title="Brownian Path" />
      <page pageid="1028" ns="0" title="Gemstone like compounds with high potential" />
      <page pageid="1223" ns="0" title="Base material with high potential" />
      <page pageid="1469" ns="0" title="Assemby chamber" />
      <page pageid="1647" ns="0" title="Single rotation joint reconfigurable shape robots" />
    </pages>
  </query>
</api>