April 22 is significant as it is celebrated as Earth Day, a day dedicated to environmental protection and awareness. First celebrated in 1970, Earth Day has become a global movement aimed at raising awareness about various environmental issues, including pollution, climate change, and conservation. Events are organized worldwide on this day, promoting sustainable practices, educational programs, and grassroots activism. People engage in activities such as tree planting, cleaning up local parks, and advocating for green policies. The significance of April 22 as Earth Day emphasizes the importance of protecting our planet and encourages individuals to adopt environmentally friendly habits year-round.