Removing Events post

I created two categories. News and Events..
on my page template i only want to sow News and not post events. I have the fallowing code. How can i do not to show title event just news??
it get events category feed

<?php
           $posts = get_posts('numberposts=4&order=DESC&orderby=post_title');
             foreach ($posts as $post) : start_wp(); ?>
           <strong><?php the_date(); echo ""; ?></strong>
           <a>" title=" <?php the_title(); ?>"><?php the_title() ; ?></a>

		   <?php
            endforeach;
            ?>

[Please post code snippets between backticks or use the code button.]