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Change in the earth's orbit?

  1. Feb 17, 2010 #1
    last night i was watching a public broadcasting special about climate change, and they mentioned that 125,000 years ago there was a large peak in CO2 in the atmosphere which caused a rise in global temp. they stated that the effect was caused by a "change in the earth's orbit around the sun."

    what happened 125,000 years ago that would have caused a change in the earth's orbit significant enough to affect the global climate? thanks.
  2. jcsd
  3. Feb 17, 2010 #2

    D H

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  4. Feb 17, 2010 #3
    thanks DH - that helped.
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