Meta Refresh
The 'meta refresh' tag allows you to automatically reload the current page after a set time period. Actually, it's just the 'meta' tag. The 'refresh' bit is simply the value you give to the 'http-equiv' attribute. Anyway, here's how you refresh the page using HTML.
Refresh the Current Page
This code refreshes the current page after 5 seconds:
<meta http-equiv="refresh" content="5"/>
Redirect to Another Page
You can also redirect the user to another page if you wish. This example redirects to another page immediately. By setting a low time interval (i.e. "0"), the page will refresh/redirect almost as soon as the user arrives.
<meta http-equiv="refresh" content="0;url=http://www.natural-environment.com/"/>
Note that the W3C don't recommend using this method for redirections. This is because, behind the scenes, no information is provided to the browser (or search engine) about the original page or destination page. It's better to use a server-side redirection (directly via the web server) or using server-side code. Here's an example of using ColdFusion to do a URL redirection.
JavaScript Refresh
The meta tag isn't the only way you can do a client-side refresh. You can also use JavaScript to refresh the page.