While Earth Day, observed annually on April 22, may not be a major holiday that’s widely celebrated outside of classrooms, it’s more than worthy of honoring. After all, without Earth, where would we ...

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 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, ...

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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 ...

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 ...

This Earth Day, test your environmental knowledge by participating in CBS News' #OutGreenMe challenge. Grab your phone and quiz someone with the below facts and show us how much you know about our ...

April showers aren't the only thing the fourth month of the calendar year brings. In fact, there are a variety of April holidays to celebrate all month long, including April Fools' Day, Easter, Arbor ...