Here are some fun facts about Earth as we celebrate this planet we live on for Earth Day.

The founder of Earth Day was Senator Gaylord Nelson, who was inspired to create the global observance after one of the worst ecological disasters in U.S. history.

You might know that Saturday, Apr. 22 is Earth Day, but where did it come from and why do we celebrate? Here are some interesting facts about this worldwide celebration that’s been going on for ...

Brush up on your Earth Day knowledge with these interesting Earth Day facts and trivia about how it began and why we celebrate Mother Earth on April 22.

For Earth Day on April 22, interesting facts including who invented it, why it's on that date, and how it turned into a global movement.

Read these 75 interesting and cool facts about Earth to learn more about our planet.

Earth Day was founded in 1970 and has only gotten bigger since then. Here are five facts about the history of Earth Day to better appreciate the activism that brought it to life.

Hear that wombat poop is cubed and other facts from "The Wondrous Workings of Planet Earth" at Powell's on Nov. 25.

5 fun facts about evolution The last common ancestor of all life on Earth is estimated to have existed around 4.2 billion years ago.

Earth serves as our fragile and precious home. As far as scientists are aware, it's the only astronomical object known to ...