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The remarkable complexity of soil and its importance to a wide range of ecosystem services presents major challenges to the modeling of soil processes. Although major progress in soil models has occurred in the last decades, models of soil processes remain disjointed between disciplines or ecosystem services, with considerable uncertainty remaining in the quality of predictions and several challenges that remain yet to be addressed. First, there is a need to improve exchange of knowledge and experience among the different disciplines in soil science and to reach out to other Earth science communities. Second, the community needs to develop a new generation of soil models based on a systemic approach comprising relevant physical, chemical, and biological processes to address critical knowledge gaps in our understanding of soil processes and their interactions. Overcoming these challenges will facilitate exchanges between soil modeling and climate, plant, and social science modeling communities. It will allow us to contribute to preserve and improve our assessment of ecosystem services and advance our understanding of climate-change feedback mechanisms, among others, thereby facilitating and strengthening communication among scientific disciplines and society. We review the role of modeling soil processes in quantifying key soil processes that shape ecosystem services, with a focus on provisioning and regulating services. We then identify key challenges in modeling soil processes, including the systematic incorporation of heterogeneity and uncertainty, the integration of data and models, and strategies for effective integration of knowledge on physical, chemical, and biological soil processes. We discuss how the soil modeling community could best interface with modern modeling activities in other disciplines, such as climate, ecology, and plant research, and how to weave novel observation and measurement techniques into soil models. We propose the establishment of an international soil modeling consortium to coherently advance soil modeling activities and foster communication with other Earth science disciplines. Such a consortium should promote soil modeling platforms and data repository for model development, calibration and intercomparison essential for addressing contemporary challenges.

Table of Contents Introduction I. Apology Laws: Justification, Form, and Function A. Why "Sorry"? Why Apology Laws? B. Apology Laws: Form, Function, and Location C. Just Another Tort Reform?: Competing [...], Based on case studies indicating that apologies from physicians to patients can promote healing, understanding, and dispute resolution, thirty-nine states (and the District of Columbia) have sought to reduce litigation and medical malpractice liability by enacting apology laws. Apology laws facilitate apologies by making them inadmissible as evidence in subsequent malpractice trials. The underlying assumption of these laws is that after receiving an apology, patients will be less likely to pursue malpractice claims and will be more likely to settle claims that are filed. However, once a patient has been made aware that the physician has committed a medical error, the patient's incentive to pursue a claim may increase even though the apology itself cannot be introduced as evidence. Thus, apology laws could lead to either increases or decreases in overall medical malpractice liability risk. Despite apology laws' status as one of the most widespread tort reforms in the country, there is little evidence that they achieve their goal of reducing litigation. This Article provides critical new evidence on the role of apology laws by examining a dataset of malpractice claims obtained directly from a large national malpractice insurer. This dataset includes substantially more information than is publicly available, and thus presents a unique opportunity to understand the effect of apology laws on the entire litigation landscape in ways that are not possible using only publicly available data. Decomposing medical malpractice liability risk into the frequency of claims and the magnitude of those claims, we examine the malpractice claims against 90% of physicians in the country who practice within a particular specialty over an eight-year period. The analysis demonstrates that for physicians who regularly perform surgery--a context in which patients are more likely to be aware of potential risks--apology laws do not have a substantial effect on the probability that a physician will face a claim or the average payment made to resolve a claim. For nonsurgeons, we find that apology laws increase the probability of facing a lawsuit and increase the average payment made to resolve a claim, a finding which is consistent with the presence of asymmetric information. Overall, our findings indicate that on balance, apology laws increase rather than limit medical malpractice liability risk.