Happy Earth Day Earth Day is an annual event celebrated around the world on April 22 to demonstrate support for environmental protection . First celebrated in 1970, it now includes events coordinated globally by the Earth Day Network in more than 193 countries. The First Earth Day Every year on April 22, Earth Day marks the anniversary of the birth of the modern environmental movement in 1970. As we prepare to mark 50 years of Earth Day in 2020, let’s take a look at the last half-century of mobilization for action: First Earth Day 1970 Individuals Mobilized For Action Every Earth DAY 1 Billion COUNTRIES ENGAGED ...