Jaxon Mercer, Rachel Starr and Alonso Prieto plant a tree as they join with Salt Lake City Department of Public Lands and other community volunteers for a combined Earth Day and Arbor Day celebration ...

NORFOLK, Va. — In the 1960s, the negative effects of fossil fuel use concerned late Wisconsin Senator Gaylord Nelson. He tapped a young activist named Denis Hayes to help push a movement to reduce the ...

Earth Day, celebrating its 55th anniversary in 2025, raises awareness about environmental protection and the need to preserve natural resources. In 1970, April 22 was chosen for the first Earth Day, ...

Here’s a look back at what happened in the Chicago area on April 22, according to the Tribune’s archives. Is an important event missing from this date? Email us. Some Chicagoans spent the first Earth ...

Every year on April 22, people around the world celebrate Earth Day. It marks the anniversary of the birth of the modern environmental movement in 1970. More than 1 billion people in over 193 ...

The Oct. 18 No Kings protests exceeded the previous June 14 No Kings protests by about 2 million people, organizers say.