<iframe src="//www.epa.gov/sites/production/files/widgets/earthdaycountdown.html" id="earthdaycountdown" width="150" height="100" scrolling="no" frameborder="0" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true"> </iframe>
Shows how many days remain until the next Earth Day (April 22).