RE: Missing Side Bar

Check your index.php

<style type="text/css" media="screen">
@import url( https://opirg.uwindsor.ca/news/style.css );
</style>

and try to modify to:

<style type="text/css" media="screen">
<?php @import url( https://opirg.uwindsor.ca/news/style.css ); ?>
</style>

To change execute the php code.

the @import doesn’t need to be php’d.
When I look at your HTML source, I see at the very end:
<div id="menu">

Perhaps there is some problem with the php in your sidebar.php file (or wp-sidebar.php – whichever one you’re using)