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.

Add Yahoo as a preferred source to see more of our stories on Google. Get excited about Earth Day with these interesting facts about the world. Traveling to new places always expands the mind, but ...

Did you know that our planet is rocketing around the sun at 67,000 mph? Or that it once had two moons? Here are some amazing facts about Earth.

There's so much to celebrate in the month of April. The fourth month of the calendar year ushers in warm weather, tulips and Earth Day, the global celebration of our planet and all its splendor. The ...

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

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 more ...

Earth Day is one of the most popular and widespread non-religious holidays in the world, recognized in over 100 nations across continents. Although the event was primarily based in the United States, ...

Like your earlobes? They are rich in nerve endings, and many scientists will tell you they have no biological purpose at all.

A college student in a gas mask "smells" a magnolia blossom during the first Earth Day on April 22, 1970 in New York City. Credit - AP More than 8 billion people inhabit Earth, and soon a springtime ...