Google Doodle: Apr 22, 2002 Earth Day
Google Doodle: Apr 22, 2003 Earth Day
Google Doodle: Apr 22, 2004 Earth Day
Google Doodle: Apr 22, 2005 Earth Day
Google Doodle: Apr 22, 2006 Earth Day
Google Doodle: Apr 22, 2007 Earth Day
Google Doodle: Apr 22, 2008 Earth Day
Google Doodle: Apr 22, 2009 Earth Day
Google Doodle: Apr 22, 2010 Earth Day
Google Doodle: Apr 22, 2011 Earth Day