More than 30,000 people have been forced to leave their homes as a massive wildfire sparked by a summer heat wave continues to sweep across the US state of Colorado. <br /><br />Some residential buildings in the US Air Force Academy there have also been evacuated due to what has been dubbed the state's biggest natural disaster in three decades. <br /><br />Soaring temperatures are hampering efforts by authorities to control the fires, raging for almost a week. Only about five per cent of the blaze has been contained so far. <br /><br />John Terrett reports from Washington.
