Google has marked Earth Day on April 22 by creating of a special "Google Doodle" on its homepage.

The doodle shows an idyllic nature scene complete with an abundance of foliage, trees and animals such as pandas and penguins. Internet users who click on the doodle are directed to search results regarding Earth Day.

The Earth Day doodle can be viewed via or its regional equivalents.

Google has frequently added images to its homepage to mark significant events; recent Google Doodles were created to mark the 50th anniversary of the first man in space on April 12 and Charlie Chaplin's birthday on April 16.

Now in its 41st year, Earth Day is an international environmental campaign aimed at raising awareness of climate change. Celebrities, businesses and individuals around the world are supporting the campaign through a series of events.

The organizers behind Earth Day are also encouraging individuals to publically pledge to do an environmentally friendly action, such as recycle more, as part of Earth Day's Billion Acts of Green campaign. The organizers hope they can collect a billion public pledges before the global Earth Summit in Rio in 2012.

More information about the ongoing campaign and events occurring in support of Earth Day can be found via the Earth Day website: