Earth Day

Earth Day is a day on which events are held worldwide to increase awareness and appreciation of the Earth's natural environment. The name and concept of Earth Day was allegedly pioneered by John McConnell in 1969 at a UNESCO Conference in San Francisco. It was first observed on March 21, 1970, but in 2009 the United Nations designated April 22 as International Mother Earth Day.

To celebrate this day, Google has placed a doodle of a beautiful patch of flowers on its homepage.