EARTH Day, which is held on April 22 every year, has been celebrated with an animated doodle by the search engine Google. Hovering over different parts of the animated doodle produces a variety of actions, including a sneezing panda and a salmon leaping upstream before it is eaten by a bear. Earth Day is themed around A billion acts of green, a campaign to get people around the world to perform a billion separate acts of environmental service. Current pledges on the Earth Day website include someone planning to reduce their CO2 footprint and a promise to save energy by turning off all unnecessary electrical appliances. The first Earth Day, on April 22, 1970, got 20 million Americans from all walks of life involved in the environment and is widely credited with launching the modern environmental movement. The passage of the landmark Clean Air Act, Clean Water Act, Endangered Species Act and many other groundbreaking environmental laws soon followed. This is Google's third doodle in just over a week, following an animated clip commemorating Yuri Gagarin and a short video clip that celebrated Charlie Chaplins 122nd birthday. Telegraph