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2. 25 Earth Day Facts—Plus, How To Help the Planet Today and ...

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

   Earth Day fun facts for kids and adults. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please ...

3. Earth - Wikipedia

   en.wikipedia.org/wiki/Earth

   Earth's average orbital distance is about 150 million km (93 million mi), which is the basis for the astronomical unit (AU) and is equal to roughly 8.3 light minutes or 380 times Earth's distance to the Moon. Earth orbits the Sun every 365.2564 mean solar days, or one sidereal year. With an apparent movement of the Sun in Earth's sky at a rate ...

4. Climate change - Wikipedia

   en.wikipedia.org/wiki/Climate_change

   Energy flows between space, the atmosphere, and Earth's surface. Most sunlight passes through the atmosphere to heat the Earth's surface, then greenhouse gases absorb most of the heat the Earth radiates in response. Adding to greenhouse gases increases this insulating effect, causing an energy imbalance that heats the planet up.

5. 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 ...

6. 28 interesting facts about Earth - AOL

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   From extreme climates to moon quakes, here are some top facts about Earth. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...

7. Atmosphere - Wikipedia

   en.wikipedia.org/wiki/Atmosphere

   The composition of Earth's atmosphere is determined by the by-products of the life that it sustains. Dry air (mixture of gases) from Earth's atmosphere contains 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and traces of hydrogen, helium, and other "noble" gases (by volume), but generally a variable amount of water vapor is ...

8. 135 Interesting Facts for Kids and Adults to Blow Your Mind - AOL

   www.aol.com/135-interesting-facts-kids-adults...

   Interesting Facts for Kids. 66. Scotland's national animal is a unicorn. 67. Tigers have striped skin, not just striped fur. ... while one day on Earth is 24 hours. 98. Buzz Lightyear’s original ...

9. Empirical evidence for the spherical shape of Earth - Wikipedia

   en.wikipedia.org/wiki/Empirical_evidence_for_the...

   s is along the surface of Earth, d is the straight line distance, and ~d is the approximate straight line distance assuming h << the radius of Earth, 6371 km. In the SVG image, hover over a graph to highlight it. On a completely flat Earth without obstructions (mountains, hills, valleys or volcanos), the ground itself would never obscure ...