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2. Purple Earth hypothesis - Wikipedia

   en.wikipedia.org/wiki/Purple_Earth_hypothesis

   The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, [1] that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin -based chlorophyll, making the surface biosphere appear purplish ...

3. 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]

4. Shades of purple - Wikipedia

   en.wikipedia.org/wiki/Shades_of_purple

   Shades of purple. There are numerous variations of the color purple, a sampling of which is shown below. In common English usage, purple is a range of hues of color occurring between red and blue. [1] However, the meaning of the term purple is not well defined. There is confusion about the meaning of the terms purple and violet even among ...

5. 10 Surprising Facts About Earth Day - AOL

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

   10 Surprising Facts About Earth Day. A college student in a gas mask "smells" a magnolia blossom during the first Earth Day on April 22, 1970 in New York City. Credit - AP. More than 8 billion ...

6. 37 Earth Day Activities for Kids - AOL

   www.aol.com/37-earth-day-activities-kids...

   Monday, April 22nd marks Earth Day 2024, and while we aren’t limiting our pledge to live a little greener to a single day, it’s a great opportunity to teach our kids about living sustainably.

7. Seven Coloured Earths - Wikipedia

   en.wikipedia.org/wiki/Seven_Coloured_Earths

   Seven Coloured Earths. Coordinates: 20°26′25″S 57°22′24″E. /  20.44028°S 57.37333°E  / -20.44028; 57.37333. The seven Coloured Earths are a geological formation and prominent tourist attraction found in the Chamarel plain of the Rivière Noire District in south-western Mauritius. It is owned by a private company and the people ...

8. 25 Exciting Earth Day Activities for Kids - AOL

   www.aol.com/lifestyle/21-earth-day-activities...

   8. Power down and let mother nature be your guide. Nature-inspired outings are a great way to get kids to put down their tablets and turn their attention to mother Earth, and there are ...

9. Celebrate Earth Day with These Fun Activities for Kids ... - AOL

   www.aol.com/lifestyle/celebrate-earth-day-fun...

   While any day is the right day to pick up trash in your community, on and around April 22 EarthDay.org and a wealth of other organizations host community clean-ups, giving neighbors a chance to ...