Happy Earth Day! What is Earth Day? I only know this when I want to search something on Google Search engine.
According to Wikipedia:
Earth Day, celebrated April 22, is a day designed to inspire awareness and appreciation for the Earth’s environment. It was founded by U.S. Senator Gaylord Nelson as an environmental teach-in in 1970 and is celebrated in many countries every year. This date is Spring in the Northern Hemisphere and Autumn in the Southern Hemisphere.
Read more about Earth Day