The World Earth Day, which falls on April 22 every year, is a festival specially set up for the world's environmental protection. It aims to raise the public's awareness of existing environmental problems and mobilize the public to participate in the environmental protection movement. Through green and low-carbon life, Improve the overall environment of the planet. Earth Day was launched in 1970 by Gaylord Nelson and Dennis Hayes. Today, the celebration of Earth Day has grown to 192 countries around the world, with more than 1 billion people participating every year, making it the largest folk environmental festival in the world.