As is common practice with almost all professionally-built websites, this site uses ‘cookies,’ primarily to count visitors to these pages, and determine things such as how long visitors spend on the site and which pages are viewed.
This is done via GoSquared, a UK-based third-party service.
Cookie management/settings is via CookieBot, an independent third-party monitoring service. More information below.
For more general information, read the Wikipedia article on cookies.