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  1. Earth Day - Wikipedia

    The goal of Earth Day 2014 was to dramatically personalize the massive challenges surrounding global climate change and weave that into both Earth Day 2014 and the five-year countdown to Earth Day …

  2. Earth Day: The Official Site | EARTHDAY.ORG

    Apr 2, 2009 · Earth Day is now commemorated every April 22, and organizers of events worldwide raise awareness of environmental threats while celebrating environmental progress.

  3. Earth Day | Definition, Environmentalism, History, & Facts ...

    Earth Day is an annual celebration honoring the achievements of the environmental movement and raising awareness of the importance of long-term ecological sustainability. It is celebrated on either …

  4. Earth Day: What is it and why does it matter? | Space

    Apr 22, 2025 · Earth Day occurs annually on April, 22. It began in 1970 and celebrates the environmental diversity of Earth and highlights ways of protecting it.

  5. Earth Day 2025 - Origins, Theme, Celebration | HISTORY

    Oct 27, 2009 · Earth Day was founded in 1970 as a day of education about environmental issues and the holiday is now a global celebration that’s sometimes extended into Earth Week, a full seven days …

  6. Today in History - April 22 - Library of Congress

    Apr 22, 2025 · Earth Day Earth Day was first observed on April 22, 1970, when an estimated 20 million people nationwide attended the inaugural events at tens of thousands of sites including elementary …

  7. When is Earth Day? How it started, Earth Day activity ideas

    Apr 1, 2025 · Earth Day is April 22. Here's what to know about how Earth Day happened and how to celebrate our planet this April.