For Earth Day on April 22, interesting facts including who invented it, why it's on that date, and how it turned into a ...

Add Yahoo as a preferred source to see more of our stories on Google. This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most ...

The first Earth Day was in April 1970. About one billion people celebrated across 193 countries. The day’s goal was to encourage governments, companies, and individuals to support a healthy ...