A correlation between Earth's inclinations and the times of the cold   events recorded in Devils Hole climate data
  The calculated values of Earth's inclinations during the cold events in the 500 kyr climate record of Devils Hole show a correlation: they cluster in the regions around 1 and 2 degrees. The Devils Hole record has been chosen, since it was dated by absolute methods. Other climate records covering the same period also have a reduced number of cold events between the two regions. The correlation lends support to the proposal of R. A. Muller and G.J. MacDonald that the observed 100 kyr climate cycle is due to the varying inclination of Earth's orbit and to material located near the invariant plane which shields off the solar radiation. 
W. Woelfli and W. Baltensperger