This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
This site uses the viewport meta tag which means the content may be optimized for mobile content.
Open graph description entity tag
When running in a browser on a mobile phone, "format-detection" meta tag determines whether or not telephone numbers in the HTML content will appear as hypertext links. The user can click a link with a telephone number to initiate a phone call to that phone number.
By adding rel="home" to a hyperlink, a page indicates that the destination of that hyperlink is the homepage of the site in which the current page appears.