Explore 25 Major Events in Earth's 4.5 Billion Year History. Discover pivotal moments from its formation to the rise of life.

If the Entire History of Earth Were Just One ...

Millions of people around the world will pause Wednesday, 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 ...

Airlie Center in Warrenton, Virginia, hosted a meeting in 1969 that sparked the creation of Earth Day.(Courtesy Josh Reichert/Airlie Center) In 1969, a group of law and medical students gathered at a ...

Add Yahoo as a preferred source to see more of our stories on Google. Oh, how we love Mother Earth, don't we? Earth is our home and has given us so much — green grass, sunny skies, breathtaking ...

"Outgrowth of the LPI Conference on the Origin of the Earth, which was held in Berkeley, California in December 1988"--Preface. 3D solar nebula models : implications for earth origin / A.P. Boss -- ...

Oh, how we love Mother Earth, don't we? Earth is our home and has given us so much — green grass, sunny skies, breathtaking sunsets and beautiful snow — so why not celebrate it by taking one day to ...