(Probably of marginal interest to most folks on the list.)

From the on-line Washington Post: "Stutters in Earth's spin changed length of days slightly"
http://www.washingtonpost.com/national/health-science/stutters-in-earths-spin-changed-length-of-days-slilghtly/2013/07/15/4d63d328-e8bd-11e2-aa9f-c03a72e2d342_story.html?Post+generic=%3Ftid%3Dsm_twitter_washingtonpost

The Post article stems from R. Holme & O. de Viron, "Characterization and implications of intradecadal variations in length of day,"
Nature 499, 202-204 (11 July 2013); http://www.nature.com/nature/journal/v499/n7457/full/nature12282.html (only abstract is available for free).

    --ado