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A high proportion of New York City public school children had a probable mental disorder 6 months after September 11, 2001. The data suggest that there is a relationship between level of exposure to trauma and likelihood of child anxiety/depressive disorders in the community. The results support the need to apply wide-area epidemiological approaches to mental health assessment after any large-scale disaster.

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Family psychoeducation is an evidence-based practice that has been shown to reduce relapse rates and facilitate recovery of persons who have mental illness. A core set of characteristics of effective family psychoeducation programs has been developed, including the provision of emotional support, education, resources during periods of crisis, and problem-solving skills. Unfortunately, the use of family psychoeducation in routine practice has been limited. Barriers at the level of the consumer and his or her family members, the clinician and the administrator, and the mental health authority reflect the existence of attitudinal, knowledge-based, practical, and systemic obstacles to implementation. Family psychoeducation dissemination efforts that have been successful to date have built consensus at all levels, including among consumers and their family members; have provided ample training, technical assistance, and supervision to clinical staff; and have maintained a long-term perspective.

Dental enamel, a hierarchical material composed primarily of hydroxylapatite nanowires, is susceptible to degradation by plaque biofilm-derived acids. The solubility of enamel strongly depends on the presence of Mg(2+), F(-), and CO3(2-). However, determining the distribution of these minor ions is challenging. We show—using atom probe tomography, x-ray absorption spectroscopy, and correlative techniques—that in unpigmented rodent enamel, Mg(2+) is predominantly present at grain boundaries as an intergranular phase of Mg-substituted amorphous calcium phosphate (Mg-ACP). In the pigmented enamel, a mixture of ferrihydrite and amorphous iron-calcium phosphate replaces the more soluble Mg-ACP, rendering it both harder and more resistant to acid attack. These results demonstrate the presence of enduring amorphous phases with a dramatic influence on the physical and chemical properties of the mature mineralized tissue.