Earth Day is an annual global event celebrated on April 22 to demonstrate support for environmental protection and raise awareness about the need to safeguard the planet.  It was first held in 1970, founded by Senator Gaylord Nelson of Wisconsin, who was inspired by growing public concern over environmental issues like the 1969 Santa Barbara oil spill and the publication of Rachel Carson’s book Silent Spring. The inaugural event mobilized 20 million Americans and is credited with launching the modern environmental movement, leading to the creation of the Environmental Protection Agency (EPA) and key environmental laws like the Clean Air and Clean Water Acts. 

Over the decades, Earth Day has evolved into the world’s largest secular observance, now engaging over 1 billion people in more than 190 countries.  Organized globally by EarthDay.org, the event unites individuals, communities, and governments to take action on pressing environmental concerns such as climate change, pollution, biodiversity loss, and sustainability. Activities range from community cleanups and tree planting to educational programs and advocacy, serving as a powerful reminder of humanity’s shared responsibility to protect Earth’s natural resources for future generations.