Millions of people across the globe are gathering to mark Earth Day and celebrate the environmental movement. The event began in 1970 in the United States, and is now marked around the world.

Learn about Earth Day founder Gaylord Nelson (1916–2005 ... and podcasts that highlight Smithsonian efforts to advance sustainability and discovery in order to help people and nature thrive together.

For this International Mother Earth Day, let's remimd ourselves - more than ever - that we need a shift to a more sustainable economy that works for both people and the planet. Let’s promote ...

To help readers understand where the companies they do business with and invest in stand, the USA TODAY and Statista ranking ...

Big changes are difficult, especially when they involve other people. Where do you begin? For this year's Earth Day, we spoke to people who have successfully had tricky climate chats at home.

The first Earth Day happened on 22 April 1970 in the USA, in response to a spill from an oil tanker. It has since grown to become a global event marked by many millions of people around the world.

Pennsylvania The first Earth Day saw 20 million people across the US take to the streets. It became a global event in 1990, and now involves over one billion people of all ages in nearly 200 ...

WATCH: On Earth Day, Biden signs order to protect old-growth forests from wildfire President Joe Biden on Friday signed an executive order intended to help restore national forests devastated by ...