Spring has sprung and it's time to get outdoors and celebrate nature. And what better time to keep our planet happy and healthy than on Earth Day? See when we celebrate the holiday this year, what ...

On Earth Day, the globe celebrates our planet by supporting all things Mother Nature. This year, Earth Day lands on Tuesday, April 22. The day has been celebrated for 55 years, and while not federally ...

"Earth Day has always been an event of the people." On April 22, 1970, 20 million people across the globe celebrated the very first Earth Day. The idea was sparked by the power of the anti-war ...

Four large banners rise high above people's heads at the March to End Fossil Fuels in New York, New York. Four large banners rise high above people's heads at the March to End Fossil Fuels in New York ...

Millions of people around the world will pause on Tuesday, at least for a moment, to mark Earth Day. It's an annual event founded by people who hoped to stir activism to clean up and preserve a planet ...

The first Earth Day was celebrated in 1970, when Wisconsin senator Gaylord Nelson organized a national demonstration to raise awareness about environmental issues, according to National Geographic.