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  2. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.

  3. 20 Earth Day facts that aren't common knowledge - AOL

    www.aol.com/news/10-earth-day-facts-might...

    A 2015 study estimated that there are roughly 3 trillion trees on earth, give or take a few million. Since there are around 8 billion people currently living on the planet, the math boils down to ...

  4. 25 Earth Day Facts—Plus, How To Help the Planet Today and ...

    www.aol.com/lifestyle/25-earth-day-facts-plus...

    The first Earth Day in 1970 inspired the passage of the Clean Air, Clean Water and Endangered Species Acts, according to the EPA. 6. The theme for Earth Day 2024 is Planet vs. Plastics.

  5. 13 Surprising Earth Day Facts That Most People Don't Know - AOL

    www.aol.com/lifestyle/13-surprising-earth-day...

    Earth Day has been around since the '70s. Every year, over a billion people get involved with the initiatives. Here, learn surprising Earth Day facts.

  6. Encyclopedia of Earth - Wikipedia

    en.wikipedia.org/wiki/Encyclopedia_of_Earth

    The Encyclopedia of Earth (abbreviated EoE) is an electronic reference about the Earth, its natural environments, and their interaction with society.The Encyclopedia is described as a free, fully searchable collection of articles written by scholars, professionals, educators, and other approved [who?] experts, who collaborate and review each other's work.

  7. Earth Day - Wikipedia

    en.wikipedia.org/wiki/Earth_Day

    Annual. Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EARTHDAY.ORG (formerly Earth Day Network) [1] including 1 billion people in more than 193 countries. [2][1][3] In 1969 at a UNESCO Conference in San ...

  8. 10 Surprising Facts About Earth Day - AOL

    www.aol.com/news/10-surprising-facts-earth-day...

    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.

  9. Earth's crust - Wikipedia

    en.wikipedia.org/wiki/Earth's_crust

    Earth's crust is its thick outer shell of rock, referring to less than one percent of the planet's radius and volume. It is the top component of the lithosphere, a solidified division of Earth 's layers that includes the crust and the upper part of the mantle. [1] The lithosphere is broken into tectonic plates whose motion allows heat to escape ...