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>
    <recentchanges rccontinue="2013-02-25T14:51:28Z|283" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="מחלת אסטמה" rcid="293" pageid="3" revid="293" old_revid="292" timestamp="2013-03-11T08:05:14Z" />
      <rc type="edit" ns="0" title="מחלת אסטמה" rcid="292" pageid="3" revid="292" old_revid="291" timestamp="2013-03-11T08:03:43Z" />
      <rc type="edit" ns="0" title="מחלת אסטמה" rcid="291" pageid="3" revid="291" old_revid="266" timestamp="2013-03-11T07:53:00Z" />
      <rc type="log" ns="6" title="קובץ:סיגריה.jpg" rcid="290" pageid="0" revid="0" old_revid="0" timestamp="2013-02-27T11:07:08Z" />
      <rc type="edit" ns="0" title="זיהום אויר ובריאות האדם" rcid="289" pageid="5" revid="289" old_revid="288" timestamp="2013-02-25T15:50:37Z" />
      <rc type="edit" ns="0" title="זיהום אויר ובריאות האדם" rcid="288" pageid="5" revid="288" old_revid="286" timestamp="2013-02-25T15:49:54Z" />
      <rc type="log" ns="6" title="קובץ:מסכת גז מבנה.gif" rcid="287" pageid="0" revid="0" old_revid="0" timestamp="2013-02-25T15:47:46Z" />
      <rc type="edit" ns="0" title="זיהום אויר ובריאות האדם" rcid="286" pageid="5" revid="286" old_revid="282" timestamp="2013-02-25T15:46:30Z" />
      <rc type="log" ns="6" title="קובץ:גזים רעילים סמל.jpg" rcid="285" pageid="0" revid="0" old_revid="0" timestamp="2013-02-25T15:25:04Z" />
      <rc type="log" ns="6" title="קובץ:גזים רעילים.jpg" rcid="284" pageid="0" revid="0" old_revid="0" timestamp="2013-02-25T14:52:56Z" />
    </recentchanges>
  </query>
</api>