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. 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 ...

Uncover 100 Things You Never Knew About The Earth! Explore mind-blowing facts from its fiery core to the moon's violent birth ...

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, ...

Earth Day is one of the most popular and widespread nonreligious holidays in the world. Although the event was primarily based in the United States, by 2009 the coordinators for Earth Day helped gain ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our ...

PENNSYLVANIA, USA — In the days, years, and decades ahead of the first Earth Day, Americans were consuming large amounts of gasoline and fossil fuels. Businesses were able to emit plumes of smoke into ...

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 ...