In the recent SIAM Review, vol 54, No 3, pp 597-606, Robert Vanderbei does a nice analysis of daily temperature data. This uses publicly available data. A version of the paper is available at http://arxiv.org/pdf/1209.0624 and there is a presentation at http://www.princeton.edu/~rvdb/tex/talks/GERAD/LocalWarming.pdf This would make a nice case for a vignette showing how to do such an analysis in R, possibly as a project for a senior undergraduate or perhaps even at the Master's level if some tools were developed, since Vanderbei presents a good argument for using Least Absolute Deviations regression (LAD). Generally LAD is overlooked by statisticians, maybe because the tools are unfamiliar. I'm willing to kibbitz on a vignette if there's interest somewhere. John Nash