Earth Day - Trivia, Quizzes, and Brain Teasers | Mental Floss

The Reason We Celebrate Earth Day on April 22

Earth Day has roots in Arbor Day.

The Reason We Celebrate Earth Day on April 22

100 Fascinating Facts About Earth

The best Spaceball.

100 Fascinating Facts About Earth

9 Ways to Celebrate Earth Day From Home

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9 Ways to Celebrate Earth Day From Home

10 Fascinating Facts About Earth Day

There are countless demonstrations and gatherings worldwide on Earth Day. Pictured above is a public art piece that was displayed in Washington, D.C. in 2008.

10 Fascinating Facts About Earth Day

What Do Those Recycling Symbols and Codes Mean?

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What Do the Terms on Energy-Saving Light Bulbs Mean?

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11 Easy Ways to Be Greener on Earth Day

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6 Creative Recycling Efforts From Around the Globe

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8 Surprising Facts and Misconceptions About Recycling

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10 Ingenious Ways to Reuse K-Cups

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25 Things You Didn’t Know You Could Recycle

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A Simple Hack for Recycling Your Contact Lens Blister Packs

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Why You Shouldn't Crush an Aluminum Can Before Recycling It

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Why You Should Always Leave the Cap on a Plastic Bottle Before You Recycle It

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An Organizer of Earth Day Looks Back on How It Began

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How the Planet Has Changed Since the First Earth Day in 1970

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