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 ...

Forget the neat, tidy narratives you might have heard in school about a stable, unchanging Earth. Just like history, our ...

You may have heard a lot of online chatter about Earth's two moons recently, but that doesn't quite get the discovery right. Earth still only has one true natural satellite — our 2,159-mile-wide moon ...

When the first Earth Day was held on April 22, 1970, the founders — U.S. Senator Gaylord Nelson (D-WI) and activist Denis Hayes — said its purpose was to draw public attention to what was at the time ...

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 ...

Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers of ...

Geological evidence, including an Ordovician-era increase in earthquakes, tsunamis, meteorites, and crater formation, suggests a significant celestial event approximately 466 million years ago. A ...