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Why is The Climate Changing?, Milankovitch Cycles are a completely natural…

- - - - The shape of Earth's orbit changes from a circle to an oval, over this period of time
      - The variation in this shape of orbit is about 5.1 million kilometers or a 3.4% variation.
      - Earth's closest approach to the sun is called the perihelion
  - - - Over the last millions of years the Obliquity of the earth has shifted between; 22.1 and 24.5 degrees perpendicular to the sun
  - - - In about 13,000 years the current Precession effects will reverse with the northern hemisphere getting more extreme and southern hemisphere getting more moderate
    - - Currently perihelion occurs during winter in the Northern Hemisphere and in summer in the Southern Hemisphere.