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Published online 11 October 2006 | Nature | doi:10.1038/news061009-7
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Earth's orbit linked to extinctions.
Spanish rodents lived and died by changes in our orbit.
Can a tiny change to the Earth's orbit wipe out life? New evidence suggests that perhaps it can — in Spanish rodents, at least.
The Earth is well known to fluctuate in a number of defined ways: its axis wobbles about; its tilt with respect to the Sun changes; and the degree to which its orbit isn't circular varies too.
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