Yea, good idea.
You could add
$file = fopen("headlines.txt", "w");
fputs($file, $headlines);
fclose($file);
and than add a cronjob with:
0 /1 lynx -dump http://www.url.com/to/thescript.php
(which would upgrade every hour)
and than wherever you want the news to be displayed, use
<?include("headlines.txt")?>