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 ...

Tuesday will be the 55th Earth Day, an event celebrated by more than one billion people in 193 countries worldwide, currently coordinated by the Earth Day Network. Earth Day’s origins start with ...

If it wasn't for an historic disaster in California, Earth Day as we know it may have never come about. A 1969 oil spill releasing 95,238 barrels of crude oil off the coast of Santa Barbara, ...