Mark has recently published “Price Determination and Efficiency in the Market for South Platte Basin Ditch Company Shares,” with Matt Payne ’09 in the Journal of the American Water Resources Association. Their paper, which develops the first price index for western water rights, is under review with the American Journal of Agricultural Economics. He continues to work with Alison Levin ’14 on “The Ultra-Orthodox Haredim as a Club Good.” In the summer of 2015, he initiated a new research project on the effect of salience on motivating voter behavior on greenhouse gas reduction.