It looks like your browser is having a hard time loading the FontAwesome fonts. When I inspect the site using Chrome DevTools, I get the following error from the console:
Font from origin ‘http://web.stanford.edu’ has been blocked from loading by Cross-Origin Resource Sharing policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://bps.stanford.edu’ is therefore not allowed access.
What I would do is change this line in your header:
<link rel='stylesheet' id='editor-font-awesome-css-css' href='http://web.stanford.edu/group/bps/cgi-bin/wordpress/wp-content/themes/editor.1.1.2/editor/inc/fontawesome/font-awesome.css?ver=4.1.0' type='text/css' media='screen' />
To this:
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.no-icons.min.css" rel="stylesheet">
<link href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">
See this page for more information on using FontAwesome.